Endocrine and Respiratory Pre-Lab Questions

Question 1

How do the locations of the endocrine organs in the cat compare with those in the human?

Answer 1

The thymus in a cat hangs down over the heart whereas in a human, the thymus is located directly behind the sternum.

Question 2

Name two endocrine organs located in the neck region.

Answer 2

Thyroid and Thymus gland.

Question 3

Name three endocrine organs located in the abdominal cavity.

Answer 3

The adrenal glands, ovaries, and pancreas.

Question 4

Given the assumption, not necessarily true, that human beings have more stress than cats, which endocrine organs would you expect to be larger in humans?

Answer 4

Adrenal glands.

Question 5

Are the cartilaginous rings in the cat trachea complete or incomplete?

Answer 5

They are incomplete.

Question 6

Compare the number of right and left lung lobes in cats and humans.

Answer 6

Cats’ right lung has four lobes, while humans’ left lung has two.

Question 7

What type of membrane is found in the pleural cavity and the pericardial sac? What is the purpose of this membrane? What type of tissue (be specific) is it made of?

Answer 7

• The serous membrane.
• To reduce friction between organs and the cavity walls by secreting a lubricant fluid.
• Simple squamous epithelium (mesothelium).

Question 8

List 2 differences between a cat and a human.

Answer 8

• A cat’s right lung has 4 lobes and its left has 2. A human’s right lung has 3 lobes and its left has 2.
• The thymus in the cat hangs down over the heart whereas in a human, the thymus is located directly behind the sternum.