3.1 Tissues and organs

Question 1

define the word tissue

Answer 1

A group of cells that work together

Question 2

define the word organ

Answer 2

a collections of tissues, that work together to perform a specific function

Question 3

For each of the following explain weather they are a specialised cell, a tissue, or an organ. Explain your answers

a. sperm
b. kidney
c. stomach

Answer 3

a. cell
b tissue
c.organ

Question 4

describe how the stomach is adapted for its role in the digestion of food

Answer 4

The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.