Exam 5 prep

chapters 27-29

What are the 2 primary sex organs?

1. Testes

2. Ovaries

The 2 primary sex organs are Testes & Ovaries:

• What do testes produce that are aka sex cells?

Gametes

The 2 primary sex organs are Testes & Ovaries:

• The Testes produce gametes (sex cells), what 2 hormones do gametes secrete?

• sperm

• ova

The 2 primary sex organs are Testes & Ovaries:

• Ovaries secrete protein/steroid sex hormones

• steroid

The 2 primary sex organs are Testes & Ovaries:

• Ovaries secrete steroid sex hormones

  • What are the 4 steroid sex hormones that they secrete & which gender is each?

1. Androgens

2. Testosterone (males)

3. Estrogens (females)

4. Progesterone (females)

What is the optimal temperature for sperm production?

~34 degrees Celsius

The optimal temp. for sperm production is ~34 degrees Celsius:

• How does this compare to normal body temperature?

3°C lower than core body temperature

Temperature is kept constant by:

• The Dartos muscle is smooth/skeletal muscle; wrinkles scrotal skin; pulls scrotum away/close to body

• smooth

• close

Temperature is kept constant by:

• The Cremaster muscles are bands of smooth/skeletal muscle that elevate testes

• skeletal

Temperature is kept constant by:

• Testicular veins arise from __ __ __ surrounding each testicular artery.

• pampiniform venous plexus

Temperature is kept constant by:

• Testicular veins arise from pampiniform venous plexus surrounding each testicular artery.

  • Pampiniform venous plexus is cooler; absorbs/excretes heat from testicular arteries, and keeps testes warm/cool

• absorbs

• cool

Where in the testes are sperm produced?

• seminiferous tubules

What do the interstitial cells of the testes secrete?

Testosterone

The Testes interstitial cells secrete Testosterone, ___ triggers this secretion.

Luteinizing Hormone

What 2 things does the sustentacular cells of the testes secrete?

1. Androgen Binding Protein (ABP)

2. Inhibin

What 2 things does the Sustentacular cells of the testes secrete are Androgen Binding Protein (ABP) & Inhibin:

• What triggers these secretions?

Follicle Stimulating Hormone

What is the copulatory organ of males?

Penis

What is the copulatory organ of females?

Vagina

T/F: The structures of the male duct system are…

• Ductus Deferens

• Urethra

• Ejaculatory Duct

• Epididymis

False

• Epididymis

• Ductus Deferens

• Ejaculatory Duct

• Urethra

T/F: Sperm is stored in the Ductus Deferens

FALSE

• sperm’s stored in epididymis

Where does sperm mature?

• Epididymis

__ is a male accessory duct that transports both sperm & urine.

Urethra

What are the three major glands associated with the male reproductive system?

1. seminal glands

2. prostate

3. bulbo-urethral glands

The three major glands associated with the male reproductive system are seminal glands, prostate, & bulbo-urethral glands:

• Which one produces about 70% of the volume of semen?

seminal glands

Why would an enlarged prostate gland interfere with urination?

Prostate surrounds Urethra

• when it enlarges

  • compresses the urethra

  • narrowing passage for urine

Sympathetic/Parasympathetic division controls erection

• parasympathetic

Sympathetic/Parasympathetic division controls ejaculation.

• Sympathetic

__ is a type of cell division that’s required for gamete formation

Meiosis

Spermatogenesis is the production of sperm (spermatoza) in ____ ___.

• seminiferous tubules

Spermatogenesis is the production of sperm in seminiferous tubules:

• Spermiogenesis is the first/last stage of spermatogenesis in which the ___ become sperm.

• last

• spermatids

The Blood-testis-barrier keeps ___ seperate from blood, and prevents it from being attacked by the ___ system.

• sperm

• immune

STOPPED @ bottom of page 2 = What are the secondary sex characteristics?