Bio Quiz 5

Question 1

5 layers of the esophagus

Answer 1

Outermost too Innermost-
Serosa
Muscularis- Longitudinal muscle and Circular muscle
Submucosa
Mucosa

Question 2

Serosa

Answer 2

The outer covering
It is made up of connective tissue
It is flexible and easy to puncture

Question 3

Muscularis

Answer 3

It is composed of 2 layers of smooth muscle; Longitudinal muscle and circular muscle
Smooth muscle is involuntary muscle which means that you do not have to consciously think about it in order to contract and/or relax. These muscles control peristalsis.

Question 4

Submucosa

Answer 4

It is made up of connective tissue and it contains; blood vessels that supply blood to the muscularis. Nerves that conduct electrical impulses to the muscularis from the brain to facilitate contractions and/or relaxations.
Lymphatic vessels which drain excess fluid away from the esophagus

Question 5

Mucosa

Answer 5

The inner lining of the esophagus that is covered in mucous. It is slippery and extremely tough.