Rat Dissection

Question 1

What are mammary papillae?

Answer 1

Opening for mammary glands.

Question 2

What is the function of vibrissae?

Answer 2

Senses vibrations.

Question 3

What does the anus do?

Answer 3

Releases solid wastes from the body.

Question 4

What is the purpose of the tail?

Answer 4

Used for balance.

Question 5

What is the function of the pinna?

Answer 5

Catches sound.

Question 6

What is the masseter?

Answer 6

Main chewing muscle, closes the jaw.

Question 7

What is the hard palate?

Answer 7

Hard rough front part of mouth roof holds saliva.

Question 8

What is the soft palate?

Answer 8

Soft back of roof of mouth.

Question 9

What are molars?

Answer 9

Teeth adapted to grinding plant material in rats.

Question 10

What is the function of the tongue?

Answer 10

Arranges food in mouth and is a taste organ.

Question 11

What does the esophagus do?

Answer 11

Pushes food from mouth to stomach.

Question 12

What is the role of the stomach?

Answer 12

Stores food and plays a beginning role in digestion.

Question 13

What is the duodenum?

Answer 13

1st part of the small intestine produces alkaline secretion to digest contents of stomach.

Question 14

What is the function of the spleen?

Answer 14

Filters the blood.

Question 15

What is the liver’s function?

Answer 15

Produces chemicals and bile stored in gallbladder, secreted for digestion of fats.

Question 16

What is the jejunum?

Answer 16

Middle of 3 divisions in small intestines absorbs nutrients.

Question 17

What is the mesentery?

Answer 17

Connects small intestine to abdominal wall, holds intestines close together.

Question 18

What is the ileum?

Answer 18

3rd and last part of the small intestine continues, absorbs nutrients.

Question 19

What is the cecum?

Answer 19

1st part of large intestine removes water from waste.

Question 20

What does the ascending colon do?

Answer 20

2nd part of large intestine removes water from waste.

Question 21

What is the rectum?

Answer 21

Feces last pass in G.I. track before it exits body through anus.

Question 22

What is the trachea?

Answer 22

Airway to bronchial tubes.

Question 23

What are the right and left bronchus?

Answer 23

Right and left tubes from trachea to lungs.

Question 24

What is the function of the right and left lung?

Answer 24

Network for diffusing and bonding oxygen to blood cells in capillaries.

Question 25

What does the diaphragm do?

Answer 25

Muscle separating chest and abdominal cavity expands to bring more oxygen into lungs.

Question 26

What is the function of the heart?

Answer 26

A 4 chambered muscle that receives and circulates oxygenated and deoxygenated blood.

Question 27

What does the superior vena cava do?

Answer 27

Brings deoxygenated blood to the right atrium from the upper body.

Question 28

What is the role of the inferior vena cava?

Answer 28

Brings deoxygenated blood to the right atrium from the lower body.

Question 29

What are the right and left atriums?

Answer 29

They receive blood from veins and arteries.

Question 30

What is the aortic arch?

Answer 30

Transports oxygenated blood from the left ventricle to the arteries.

Question 31

What do the right and left ventricles do?

Answer 31

Pump blood to the lungs and body.

Question 32

What is the function of the renal vein?

Answer 32

Brings blood from the kidney to the heart.

Question 33

What is the role of the kidney?

Answer 33

Removes wastes from blood and regulates pH.

Question 34

What is the ureter?

Answer 34

A tube connecting the kidney and urine bladder, transferring urine.

Question 35

What does the urinary bladder do?

Answer 35

Stores liquid waste filtered from blood by the kidney for elimination.

Question 36

What is the epididymis?

Answer 36

A coiled system of tubules that carries sperm from testes to vas deferens, stores and matures sperm.

Question 37

What is the vas deferens?

Answer 37

Where sperm is stored until ejaculation.

Question 38

What do seminal vesicles do?

Answer 38

Release secretions at the end of ejaculation that coagulate in the vagina and prevent different males from fertilizing.

Question 39

What is the role of the penis?

Answer 39

Deposits semen in the female reproductive tract.

Question 40

What is the function of the scrotal sac?

Answer 40

Holds and protects the testes.

Question 41

What do the testes produce?

Answer 41

Sperm.

Question 42

What is the function of the ovary?

Answer 42

Produces eggs.

Question 43

What is the oviduct?

Answer 43

Site of fertilization.

Question 44

What is the uterine horn?

Answer 44

Site of implantation and embryonic development.

Question 45

What is the vagina?

Answer 45

Receives penis and serves as the birth canal.