Exam 4: Male Flashcards
Why does the scrotum hold the testes outside the body and what is the temperature?
It needs to be at a lower temperature than the inside of the body
3 degrees Celsius cooler than body temp
What is the purpose of seminiferous tubule?
Produce maintain and store sperm
Where is sperm stored in for how long?
Stored in epididymis and last for several months until phagocytized
Why is there foreskin?
Protects the head of penis
What do each of them male accessory glands produce
Seminal gland: alkaline, 70% semen
Prostate: milky, thickens semen, helps vagina retain it
Bulbo- urethral gland: thick, cleans urine residue from urethra
What is in semen?
Mix of fluids and nutrients
What negative things are associated with the pro
What happens during erection?
A lot of blood flow travels to the penis
Sexual excitement that releases nitric oxide
How is semen ejaculated?
- Bladder sphincter muscle constricts (keeps urine in)
- Reproductive ducts and accessory glands contract
- Semen in urethra triggers a spinal reflex
What is erectile dysfunction?
Due to parasympathetic nerves not releasing enough nitric oxide
What is meiosis?
A single cell divided twice to four four daughter cells
What is the role of sustenocytes?
Provide structural support to delvelop sperm cells in seminiferous tubules
What is the final structure of a sperm?
The head which contains a condensed haploid nucleus
