Urogenital system

Question 1

Female reproductive organs

Answer 1

Gonads: ovaries- germ cell production.
Ducts: uterine tubes, uterus- transport germ cells.
Accessory glands: none.
Copulatory organs: vagina, vestibule- accept ejaculate.

Question 2

Male reproductive organs

Answer 2

Gonads: testes- germ cell production.
Ducts: epididymus, ductus deferens, urethra- transport germ cells.
Accessory glands: prostate glands- provide essential factors and volume to ejaculate.
Copulatory organs: penis- deliver germ cells to female tract

Question 3

Thermoregulation of testes is provided by

Answer 3

Cooling: scrotal location, scrotal sweat glands, testicular a. and pampiniform plexus.
Warming: cremaster mm. and dartos mm.

Question 4

Network of vv. to reduce tempature of blood in the a. supplying blood to the testes

Answer 4

Pampiniform plexus

Question 5

Path of a germ cell in the male

Answer 5

Testis (semineferous tubules to rete testus to efferent ducts) to the epididymus (head to body to tail) to the ductus deferens (through the spermatic cord and inguinal rings and prostate gland) empty into the urethra then out of the body.

Question 6

Function of the penis

Answer 6

Give the urethra support so that it can deposit the germ cells in the female repro tract

Question 7

Flow of blood in erectile tissue during a normal state

Answer 7

Rate of a. equals rate of v.: a. is coiled to slow blood flow

Question 8

Flow of blood in erect state of erectile tissue

Answer 8

Rate of a. is higher than rate of v.: a. is straighten to allow faster blood flow, v. is crimped off to slow out going blood flow, tissue fills to stretch limit of connective tissue and becomes rigid

Question 9

2 main erectile tissues and their functions

Answer 9

Corpus spongiosum- within the bulb, keeps the urethra open.

Corpus cavernsum- within the crura, adds rigidity to the penis.

Question 10

What is the os penis

Answer 10

Corpus cavernsum that has been calcified to help the urethra into the female tract without the penis being erect

Question 11

Glans of the penis

Answer 11

Bulbus glandis- more proximal glans and most distensible, forms the tie or lock.
Pars longa glandis- most distal glans, function is to get the germ cells as close to the cervix as possible.

Question 12

of crura and their attachement

Answer 12

2, ischiatic tuberosity

Question 13

Regions of the penis

Answer 13

Root: proximal portion includes the crura, bulb, and mm.
Body: middle portion up to the bulbus glandis.
Glans: distal portion including glans, os penis, and distal portions of crura and bulb

Question 14

MM. of the penis

Answer 14

Ischiocavernosis m.
Bulbospongiosis m.
Retractor penis m.

Question 15

Ischiocavernosis m.

Answer 15

Function: compress and force blood distally.

Attaches at ischiatic tuberosity and covers crus

Question 16

Bulbospongiosis m.

Answer 16

Function: compress and force blood distally.

Covers bulb of penis and fibers run L to R

Question 17

Retractor penis m.

Answer 17

Function: keeps penis retracted in sheath.
Made up of smooth mm.
Starts at tail, splits around anus, follows down ventral midline of penis to the glans.