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Test nov 10

QuestionAnswer
What is an anti body? Anti bodies are proteins produced in response to an antigen.
Effects of anti bodies Antibodies effect antigens by; inactivating the antigens,binding them together, activating the compliment cascade, facilitate phagocytosis
What is the variable region of the anti body? It is the part that attaches with the antigen.
Structure of the anti body Two inner heavy chains that are each connected to a light outer chain: Upper part form the variable region and the lower is the constant.
What is the function of the constant region of the anti body? It is responsible for activities of anti bodies. Ex; activate compliment or attach the anti body to macrophages.
What is the Antibody's primary response? As a response to the first exposure to an antigen b cells form plasma cells which produce anti bodies and memory b cells.
What is the secondary response of the antibody? Responds to the exposure of an antigen after a primary response; memory b cells quickly for plasma cells and additional b cells.
Functions of the reproductive system Production of gametes, fertilization, development and nourishment of new individual, production of reproductive hormones
What is the function of Gonandotropin Releasing Hormone GNRH (M) What gland produces it? Stimulate secretion of LH and FSH in anterior pituitary gland. Produced in Hypothalmus
What is the function of LUTEINIZING Hormone (M) What gland produces it? Stimulates synthesis and secretion of testosterone in testes. Produced in anterior pituitary.
What is the function of FOLLICLE stimulating hormone FSH? (M) What gland produces it? Supports spermatogenesis. Produced in anterior pituitary gland.
What is the function of testosterone? (M) What gland produces it? Supports spermatogenesis, stimulates development and maintenance of reproductive organs Produced in testes and interstitial cells.
What is the function of GoNandotropin Releasing Hormone GNRH (F) What gland produces it? Stimulate secretion of LH and FSH in anterior pituitary gland. Produced in Hypothalamus
What is the function of LUTEINIZING Hormone (F) What gland produces it? Causes follicles to complete maturation and undergo ovulation in ovaries. Produced in anterior pituitary.
What is the function of FHS (F) What gland produces it? Causes follicles to begin development in ovaries. Produced in anterior pituitary
Prolactin (F) Produced in AP, stimulates memory glands to secrete milk.
What is the name of the outer layer of the testes? TUNICA ALBUGINEA
What does the SEPTA divide the testes into? Lobules
Where do sperm cells develop? In the SEMINIFEROUS TUBULES
What are the cells found in the SEMINIFEROUS TUBULES called? 1) Germ cells 2) SUSTENTACULAR cells
What is he function of Germ cells in the SEMINIFEROUS TUBULES? Germ cels divide and differentiate to form sperm cells during SPERMATOGENESIS
Explain the blood testes barrier The blood testes barrier isolates sperm cells from the immune system because as the sperm cells develop they form antigens that could stimulate an immune response.
What is the function of SUSTENTACULAR cells in the testes? Tight junction between SUSTENTACULAR cells form a blood testes barrier.
SPERMATOGENESIS PROCESS First meiotic division;primary spermatocite becomes secondary>second meiotic division; secondary spermatocite becomes spermatide>spermatide becomes mature sperm cell.
What is a mature sperm cell made of? 22 autosomes and either an X or Y chromosome.
What is the beginning of the menstrual cycle called? When does ovulation occur? First day of Menses-bleeding starts and lasts appox 4-5 days. Approx mid cycle 14 days after menses.( ty[ical cycle is between 14-16 days).
What is the proliferative (follicular) phase of menstrual cycle? What happens during the proliferation phase? It is the time between the end of menses and ovulation. The Uterine mucosa undergoes proliferation.
What is the Secretory Phase of menstrual cycle? The maturation of and secretion by uterine glands.
OOGENESIS PROCESS Oogonia Oogonia divides and form one oogonia and one primary oocyte.
Primary oocyte About 5 million oocytes are produced by the 4th month of prenatal life. They begin the first mitotic division and then stops.
3rd First meiotic division is completed just before ovulation during each menstrual cycle.
4rd Secondary oocyte starts the secondary meiotic division but stops at metaphase 2
5th Secondary meiotic division is completed after ovulation and after a sperm cell unites with the secondary oocyte
Fertilization Fertilization is competed after the nuclei of the nuclei of the secondary oocyte and the sper cell unite.
What is the cell called that results from fertilization? Zygote
Where are the primary oocytes located?
Created by: lotan
 

 



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