Endocrinology-Reproduction
Terms
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- In males, Testosterone negatively inhibits _____
-
Gonadotopin-Releasing Hormone (GnRH)
Luteinizing Hormone (LH) - In males, Inhibin negatively inhibits _______
- Follicle Stimulating Hormone (FSH)
- Sperm develop _______ the Sertoli cells in the _______
-
between
seminiferous tubules - Spermatogonium
-
Produced in the fetus
46 single chromosomes - Spermatogozoa
-
23 haploid chromosomes
Single Strands - Secondary spermatocytes have ______ chromosomes
- 23 diploid double strands
- Sperm travels from the testes-->_____-->_____-->___
-
Epididymus
Vas Deferens
Urethra - Seminal Vesicles secrete____ to ejaculate
- Fructose which provides energy to the sperm
- The prostate gland adds ____ to ejaculate
- Alkaline fluid to neutralize the acidic environment of vagina
- LH binds to receptor and _____ activity of cAMP
- increases
- Increased activity of cAMP leads to _____ action of pk-A
- Increased
- pk-A stimulates conversion of ______ to testosterone
- cholesterol
- Secondary Male Sex Characteristics
-
Increased muscle mass
Increased hair (face, chest, pubic areas)
Male Pattern Baldness
Deepening of voice - Determines whether testosterone is converted to other androgens
- What other enzymes are present
- Testosterone is produced in ______
- Leydig Cells
- Low estrogen levels produce ____ feedback
- Negative
- Prolonged high estrogen levels produce _____ feedback
- Positive
- High Estrogen + High Progesterone produce ____ feedback
- Negative
- Primary oocytes are arrested in their first stage of ____ division
- meiotic
- The first meiotic division is completed just ______
- Before ovulation
- The second meiotic division is completed just _____
- After fertilization