click below
click below
Normal Size Small Size show me how
Test nov 10
Question | Answer |
---|---|
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? |