Wednesday, December 19, 2007
Monday, December 17, 2007
Digestion and Excretion WS
What is the digestive tract? a long tube with food first entering at the mouth.
What happens to undigested materials in the digestive tract? continues along the tube until it exits at the anus.
Sketch the path that food takes through the digestive tract. Be sure to include the mouth, esophagus, stomach, duodenum, small intestine, appendix, large intestine rectum, and all 4 sphincters.
What is the function of the mouth in the digestion process? food enters through the mouth
What is the term for the small mass of food that enters into the esophagus? bolus
What triggers peristalsis?the presence of the bolus in the esophagus triggers peristalsis.
What is the function of the cardiac sphincter? closes the entrance of stomach to prevents food from reentering the esophagus
What is the mucous membrane? digestive tract
How long is the small intestine? 20 feet
Where does most digestion and absorption of nutrients take place? small intestine
What increase the surface area of the small intestine? villi
What is the first section of the small intestine? What is its function? duodenum. the receptors can detect the presence of hypo and hypertonic solutions.
Where is bile stored? gallbladder
What is segmentation? Grabbing a tube tightly at various places around the middle and squeezing so that its contents are broken into smaller pieces.
When does the ileocecal sphincter open? when the amount of food in the small intestine begins to build up, the sphincter opens to let it through.
What is the function of the anal sphincter? stops waste from leaving the body until you want it to.
What is the function of the appendix in humans? serves no apparent function and sometimes gets infected and has to removed.
Where does digestion begin? mouthWhat is gastric juice made of? hydrochloric acid, and enzymes
Where are enzymes released in the small intestine produced? Pancreas
What is the function of the following enzymes: amylase, lactase, maltase, sucrase, and lipase? they break apart lactose, maltose and sucrose respectivelyThere are two ways that nutrients get into the blood stream.
Describe each method. diffuse across the intestinal membrane and into the blood by flowing along the concentration gradient
What happens to undigested materials in the digestive tract? continues along the tube until it exits at the anus.
Sketch the path that food takes through the digestive tract. Be sure to include the mouth, esophagus, stomach, duodenum, small intestine, appendix, large intestine rectum, and all 4 sphincters.
What is the function of the mouth in the digestion process? food enters through the mouth
What is the term for the small mass of food that enters into the esophagus? bolus
What triggers peristalsis?the presence of the bolus in the esophagus triggers peristalsis.
What is the function of the cardiac sphincter? closes the entrance of stomach to prevents food from reentering the esophagus
What is the mucous membrane? digestive tract
How long is the small intestine? 20 feet
Where does most digestion and absorption of nutrients take place? small intestine
What increase the surface area of the small intestine? villi
What is the first section of the small intestine? What is its function? duodenum. the receptors can detect the presence of hypo and hypertonic solutions.
Where is bile stored? gallbladder
What is segmentation? Grabbing a tube tightly at various places around the middle and squeezing so that its contents are broken into smaller pieces.
When does the ileocecal sphincter open? when the amount of food in the small intestine begins to build up, the sphincter opens to let it through.
What is the function of the anal sphincter? stops waste from leaving the body until you want it to.
What is the function of the appendix in humans? serves no apparent function and sometimes gets infected and has to removed.
Where does digestion begin? mouthWhat is gastric juice made of? hydrochloric acid, and enzymes
Where are enzymes released in the small intestine produced? Pancreas
What is the function of the following enzymes: amylase, lactase, maltase, sucrase, and lipase? they break apart lactose, maltose and sucrose respectivelyThere are two ways that nutrients get into the blood stream.
Describe each method. diffuse across the intestinal membrane and into the blood by flowing along the concentration gradient
Basic Urinary Worksheet
Basic urinary worksheet
What are three functions of the kidneys? filters all matter from blood not just waste, selectively reabsorbs all substances that the body can make use of, eliminates waste product in blood in the form of urine
What is the protective layer around the kidney? peri-renal capsule
What is the outer layer of the kidney? cortex
What is the urine collection system of the kidney? medulla
What is the dilated end of the ureters called? pelvis
What is the function of the bladder? to store urine
What transports urine in males? Females? urethra
What are three functions of the kidneys? filters all matter from blood not just waste, selectively reabsorbs all substances that the body can make use of, eliminates waste product in blood in the form of urine
What is the protective layer around the kidney? peri-renal capsule
What is the outer layer of the kidney? cortex
What is the urine collection system of the kidney? medulla
What is the dilated end of the ureters called? pelvis
What is the function of the bladder? to store urine
What transports urine in males? Females? urethra
Thursday, December 6, 2007
Definitions
Corpus luteum: A small yellow structure developing within the ruptured ovarian follicle after the egg has been released.
epididymis: a coiled tube attached to the back of each testis where sperm mature
gonad: an organ that produces gametes (ova and sperm
meiosis: cell division by which eggs and sperm are produced.
oocyte: Unfertilized egg cell
ovary: female gonad which manufactures estrogens and eggs
scrotum: The sac of skin that surrounds the testicles.
seminiferous tubule: any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
testis: a male's testes are located in a pouch that hangs suspended outside his body. The testes produce testosterone and sperm
vulva : The external female genital organs, including the clitoris, vaginal lips and the opening to the vagina.
Blastocyst: The preimplantation embryo of mammals consisting of a sphere of cells with an outer cell layer that forms the placenta and a cluster of cells on the interior called the inner cell mass that forms the embryo.
Embryo: In humans, the developing individual from the time of implantation to about the end of the second month after conception
fetus: An animal in the later stage of development before birth. In humans, the fetal stage is the from the end of the third month until birth
implantation: The embedding of the fertilized egg in the endometrium of the uterus.Lactation: Secretion or formation of milk by the mammary glands.
Umbilical cord: the cord that connects the fetus to the maternal placenta, providing nutrients and removing wastes
yolk sac: where the embryo develops
zygote: A cell formed by the union of two gametes
ultrasound: A procedure in which high-energy sound waves are bounced off internal tissues or organs and make echoes.
epididymis: a coiled tube attached to the back of each testis where sperm mature
gonad: an organ that produces gametes (ova and sperm
meiosis: cell division by which eggs and sperm are produced.
oocyte: Unfertilized egg cell
ovary: female gonad which manufactures estrogens and eggs
scrotum: The sac of skin that surrounds the testicles.
seminiferous tubule: any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
testis: a male's testes are located in a pouch that hangs suspended outside his body. The testes produce testosterone and sperm
vulva : The external female genital organs, including the clitoris, vaginal lips and the opening to the vagina.
Blastocyst: The preimplantation embryo of mammals consisting of a sphere of cells with an outer cell layer that forms the placenta and a cluster of cells on the interior called the inner cell mass that forms the embryo.
Embryo: In humans, the developing individual from the time of implantation to about the end of the second month after conception
fetus: An animal in the later stage of development before birth. In humans, the fetal stage is the from the end of the third month until birth
implantation: The embedding of the fertilized egg in the endometrium of the uterus.Lactation: Secretion or formation of milk by the mammary glands.
Umbilical cord: the cord that connects the fetus to the maternal placenta, providing nutrients and removing wastes
yolk sac: where the embryo develops
zygote: A cell formed by the union of two gametes
ultrasound: A procedure in which high-energy sound waves are bounced off internal tissues or organs and make echoes.
Wednesday, December 5, 2007
Reproductive Study Questions
Pages 938 and 939Critical Thinking Questions: 4, 7
What effect would it have on a woman's menstrual cycles if a single ovary were removed surgically? What effect would it have if both ovaries were removed. I think that it would cause early menopause becuase of the lack of hormones. I think it would cause much confusion?
What types of contraceptives provide the greatest protection against sexually transmitted diseases? Condoms.Review Exercises: 1, 7, 8, 10, 11, 20, 29, 33, 38, 40, 49, 54, 58, 61, 62, 63
List the general functions of the male reproductive system.THey are specialized to produce and maintain sperm, they also transport these cells to the female reproductive tract
Outtline the process of meiosis.Prophase I ----> Metaphase I -----> Anaphase I -----> Telophase I.
List two ways that meiosis provides genetic variability.Any one of a persons more than 8 million possible combinations of 23 chromosomes can combine with any of one of the more than 6 million combinations of his or her mate. Crossing over is another way to create genetic variability
Describe a sperm cell. a tiny, tadpole-shaped structure.Describe the epididymis, and explain its function.A tightly coiled threadlike tube about 6 meters long. Sperm mature in the epididymis.
Explain the mechanism that produces an erection of the penis.Parasymathetic nerve impulses release vasodilator nitric oxide, which causes the arteries leading into the penis to dilate, increasing blood flow into erectile tissues.
List the general functions of the female reproductive system.Are specialized to produce and maintain egg cells, also to transport these cells to the site of fertilization, and to provide a favorable enviroment for a develeloping offspring. Also to move the offspring outside, and produce female sex hormones.
Describe the structure of an ovary.Solid ovoid structures measuring about 3.5 centimeters in length.Define ovulation.As a follicle matures, its primary oocyte undergoes meiosis I, giving rise to a secondary oocyte and a first polar body. This is called ovulation.
Describe the structure of the uterus.A hollow, muscular organ, shaped like an inverted pear.Define menstrual cycle. Regular recurring changes in the endometrium, which culminate in menstrual bleeding.
Describe the process of fertilization.WHen a sperm reaches a seondary oocyte it invades the follicular cells that adhere to the oocytes surface. An enzyme is released that helps the sperm penetrate the zona pellucida.
Discuss the events that occur during the birth process.Muscular contractions force the fetus through the birth canal. Rhythmic contractions that begin at the top of the uterus and travel down its length force the contents of the uterus towards the cervix. THe head stretches the cervix, upon pushing against the cervix reflex stimulates stronger labor contractions. The placenta comes out after the birth.
Define contraception. A way to prevent pregnancy.List several methods of contraception, and explain how each prevents pregnancy.Condoms - keeps sperm out of vaginaBirth control pill- Prevents ovulation and implantationWithdrawal - Removal of penis before ejaculation.List several sexually transmitted diseases.Genital herpesGenital wartsGonorrheaSyphillisAids
Pages 938 and 939Critical Thinking Questions: 4, 7
What effect would it have on a woman's menstrual cycles if a single ovary were removed surgically? What effect would it have if both ovaries were removed. I think that it would cause early menopause becuase of the lack of hormones. I think it would cause much confusion?
What types of contraceptives provide the greatest protection against sexually transmitted diseases? Condoms.Review Exercises: 1, 7, 8, 10, 11, 20, 29, 33, 38, 40, 49, 54, 58, 61, 62, 63
List the general functions of the male reproductive system.THey are specialized to produce and maintain sperm, they also transport these cells to the female reproductive tract
Outtline the process of meiosis.Prophase I ----> Metaphase I -----> Anaphase I -----> Telophase I.
List two ways that meiosis provides genetic variability.Any one of a persons more than 8 million possible combinations of 23 chromosomes can combine with any of one of the more than 6 million combinations of his or her mate. Crossing over is another way to create genetic variability
Describe a sperm cell. a tiny, tadpole-shaped structure.Describe the epididymis, and explain its function.A tightly coiled threadlike tube about 6 meters long. Sperm mature in the epididymis.
Explain the mechanism that produces an erection of the penis.Parasymathetic nerve impulses release vasodilator nitric oxide, which causes the arteries leading into the penis to dilate, increasing blood flow into erectile tissues.
List the general functions of the female reproductive system.Are specialized to produce and maintain egg cells, also to transport these cells to the site of fertilization, and to provide a favorable enviroment for a develeloping offspring. Also to move the offspring outside, and produce female sex hormones.
Describe the structure of an ovary.Solid ovoid structures measuring about 3.5 centimeters in length.Define ovulation.As a follicle matures, its primary oocyte undergoes meiosis I, giving rise to a secondary oocyte and a first polar body. This is called ovulation.
Describe the structure of the uterus.A hollow, muscular organ, shaped like an inverted pear.Define menstrual cycle. Regular recurring changes in the endometrium, which culminate in menstrual bleeding.
Describe the process of fertilization.WHen a sperm reaches a seondary oocyte it invades the follicular cells that adhere to the oocytes surface. An enzyme is released that helps the sperm penetrate the zona pellucida.
Discuss the events that occur during the birth process.Muscular contractions force the fetus through the birth canal. Rhythmic contractions that begin at the top of the uterus and travel down its length force the contents of the uterus towards the cervix. THe head stretches the cervix, upon pushing against the cervix reflex stimulates stronger labor contractions. The placenta comes out after the birth.
Define contraception. A way to prevent pregnancy.List several methods of contraception, and explain how each prevents pregnancy.Condoms - keeps sperm out of vaginaBirth control pill- Prevents ovulation and implantationWithdrawal - Removal of penis before ejaculation.List several sexually transmitted diseases.Genital herpesGenital wartsGonorrheaSyphillisAids
Menstrual Hormonal Control
What is a hormone?Chemicals that are produced in one part of the body and used in another
What system is responsible for the production of hormones?The Endocrine SystemSketch a picture of the female reproductive system. Include the oviduct, ovaries, uterus, cervix and vagina.
Where does the embryo undergo most of its development?Uterus
What is another name for the fallopian tube?oviduct
Where does fertilization take place?oviduct, (or fallopian tubes)
What is ovulation?Changes that occur to the ovaries during the menstrual cycle
What is the follicle converted to?A Corpus Luteum
What happens during the flow phase?Hormone production stops. Uterus lining sloughs off.
What happens during the follicular phase?Follicle gets bigger and produces a hormone which makes uterus lining thicker.
What happens during the luteal phase?Follicle is converted into a corpus luteum. this makes the uterus thicken more.
What happens to the uterine lining during the first phase?It sloughs
What are the four hormones that control the menstrual cycle?LH, FSH, Progestrerone, EstrogenAs FSH increases in concentration in the blood , the follicle is?DevelopingWhen the follicle ruptures it releases what?Ova
What is considered the hormone of pregnancy?Progesterone
What is the rhythm method?Birth control in which you utry to anticipate the days of the ovulation
What do you call a couple using the rhythm method?parents...bad joke.
What is menopause? What causes it?The cessation of menstruation, The cessation of Lh.
When does fertilization occur?When the sperm and the ova combine in the oviducts
When is a zygote formed?When the sperm and the ova combine.
What is a placenta?IT transfers material between the embyro and uterus
What is a hormone?Chemicals that are produced in one part of the body and used in another
What system is responsible for the production of hormones?The Endocrine SystemSketch a picture of the female reproductive system. Include the oviduct, ovaries, uterus, cervix and vagina.
Where does the embryo undergo most of its development?Uterus
What is another name for the fallopian tube?oviduct
Where does fertilization take place?oviduct, (or fallopian tubes)
What is ovulation?Changes that occur to the ovaries during the menstrual cycle
What is the follicle converted to?A Corpus Luteum
What happens during the flow phase?Hormone production stops. Uterus lining sloughs off.
What happens during the follicular phase?Follicle gets bigger and produces a hormone which makes uterus lining thicker.
What happens during the luteal phase?Follicle is converted into a corpus luteum. this makes the uterus thicken more.
What happens to the uterine lining during the first phase?It sloughs
What are the four hormones that control the menstrual cycle?LH, FSH, Progestrerone, EstrogenAs FSH increases in concentration in the blood , the follicle is?DevelopingWhen the follicle ruptures it releases what?Ova
What is considered the hormone of pregnancy?Progesterone
What is the rhythm method?Birth control in which you utry to anticipate the days of the ovulation
What do you call a couple using the rhythm method?parents...bad joke.
What is menopause? What causes it?The cessation of menstruation, The cessation of Lh.
When does fertilization occur?When the sperm and the ova combine in the oviducts
When is a zygote formed?When the sperm and the ova combine.
What is a placenta?IT transfers material between the embyro and uterus
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