TISSUES AND ORGANS

Question 1

What are tissues?

Answer 1

collection of similar cells together preforming a specialized function, 4 primary functions - epithelial, connective, muscle, nerve.

Question 2

What are organs?

Answer 2

organ contains at least two different types of tissue.

Question 3

What are the structure and function of the ileum?

Answer 3

part of small intestine, absorption of products in digestion. large surface area due to villi having microvilli and is folded.

Question 4

What are the 4 main layers of tissue?

Answer 4

mucosa, submucosa, muscularis externa, serosa.

Question 5

What is the role of the mucosa?

Answer 5

Highly folded, crypts that secrete mucus and digestive enzymes, microvilli increasing surface area for absorption, lacteals absorb fat, muscularis allows movement.

Question 6

What is the role of the sub mucosa?

Answer 6

rich blood supply, lymph vessels carrying absorbed nutrients away from intestine.

Question 7

What is the role of the muscularis externa?

Answer 7

2 layers of smooth muscle, work oppositely to produce wave like contractions moving food through gut.

Question 8

What is the role of the serosa?

Answer 8

Outer protective layer of connective tissue.