Lab 1 - Rat 2

Question 1

4 parts of large intestine and general function

Answer 1

Caecum, colon, rectum, anus

Reabsorption of water and formation of feces from undigested stuff.

Question 2

Caecum features

Answer 2

Flabby, thin bag with brown intestinal contents. Terminates in appendix which contains lymphoid tissue in humans not rats. Breaks down cellulose. Bacteria.

Question 3

Colon 3 parts and function

Answer 3

Ascending on the right, transverse, descending towards rectum.
Semi-fluid leaving Caecum then downstream firm feces.
ABSORPTION, DEHYDRATION

Question 4

Rectum

Answer 4

Short passage leading to anus

Question 5

Anus

Answer 5

Sphincter under partial voluntary control. (Outer is vol)

Question 6

Kidney features

Answer 6

Buried in fat on the dorsal wall. Ventral surface covered in parietal peritoneum so retroperitoneal (behind peritoneum). Rich blood supply. Depression(hilus) on medial surface is the point where the artery vein and ureter access.

Question 7

Adrenal glands

Answer 7

Small brown bodies on both kidneys. Outer crust secretes steroid hormones. The inner core, medulla, secretes ardrenalin.

Question 8

3 structures of the male reproductive system

Answer 8

Seminal vesticle (bunny ears), bladder (head of clown), and prostate glands (clown suit)

Question 9

Female reproductive system

Answer 9

Ovary in horns, oviduct, then uterine horn with bladder in between.

Question 10

Food and air crossing over where?

Answer 10

Throat

Question 11

Incisor vs molar teeth function

Answer 11

Incisors for cutting

Molars for grinding

Question 12

Glottis and epiglottis

Answer 12

Opening to trachea, not an actual structure. Epiglottis in front - closes during swallowing.

Question 13

3 types of salivary glands

Answer 13

Parotid (back by ears)
Submandibular gland (bottom)
Sublingual glands x 2 on the same stem as the above gland.