Chpt 4 Objective 3

Describe the general characteristics and functions of epithelial tissue – including types of glands & how they are classified

What characterizes epithelial tissue?

It is composed mainly of cells.

Which of the following is NOT a function of epithelial tissue?
a. Absorption
b. Secretion
c. Contraction
d. Protection

Contraction

What type of epithelial tissue is described as a single layer of flat cells?

Simple squamous

Epithelial tissue lines which of the following?

Both internal and external surfaces

Which of the following surfaces does epithelial tissue NOT possess?

Center surface

How does epithelial tissue receive nutrients?

By diffusion from underlying tissues

What is the main method of regeneration for epithelial tissue?

Mitosis

The epidermis is an example of which type of epithelial tissue?

Stratified squamous

What type of tissue primarily composes glands?

Epithelial tissue

Which of the following is true about endocrine glands?

They secrete substances directly into the bloodstream.

What is the primary function of exocrine glands?

To release substances through ducts to the outside of the body.

Which of the following glands is an example of an exocrine gland?

Salivary gland

What secretion method involves the entire cell rupturing?

Holocrine secretion

In merocrine secretion, how are secretions released?

By exocytosis

What is an example of a gland that uses apocrine secretion?

Mammary gland

The lumen of a gland is:

The interior space where secretions are collected

What role does messenger RNA play in secretion?

It carries instructions from DNA to ribosomes.

Which type of gland secretes hormones directly into the bloodstream?

Endocrine glands