Lesson 3 (Unit 1)

Question 1

What is a tissue?

Answer 1

A group of cells that come together for a specific function.

Question 2

What are the 3 main functions of epithelial tissue?

Answer 2

• Protection
• Secretion
• Important for exchange of different materials

Question 3

What shape are simple epithelial cells?

Answer 3

Flat and scale-like.

Question 4

What shape are cuboidal cells?

Answer 4

Shaped like squares.

Question 5

What shape are columnar cells?

Answer 5

Shaped like rectangles (or columns).

Question 6

What is squamous epithelium?

Answer 6

A single layer of epithelial cells.

Question 7

What is stratified epithelium?

Answer 7

Two or more layers of epithelial cells.

Question 8

What is pseudostratified epithelium?

Answer 8

A single layer that looks like multiple layers of epithelial cells.

Question 9

What is the main role of simple epithelium?

Answer 9

Helps with the exchange/diffusion of substances.

Question 10

Where is simple squamous epithelium found?

Answer 10

• Lungs
• Blood vessels

Question 11

What does stratified epithelium provide?

Answer 11

Aiding in protection.

Question 12

Where is stratified squamous epithelium found?

Answer 12

• Skin
• Other openings to the body

Question 13

Where is transitional epithelium found?

Answer 13

In urinary organs (bladder, urethra, ureters).

Question 14

What is the difference between endocrine and exocrine glands?

Answer 14

• Exocrine glands produce secretions through ducts
• Endocrine glands secrete hormones directly into the blood.

Question 15

What is the main function of connective tissue?

Answer 15

Support.

Question 16

What are examples of loose connective tissue?

Answer 16

• Areola
• Adipose
• Reticular

Question 17

What is areola connective tissue?

Answer 17

General binding, found in skin and muscle.

Question 18

What is adipose connective tissue?

Answer 18

Made up of fat cells (store up fat for energy).

Question 19

What is reticular connective tissue?

Answer 19

Contains reticular fibers; can form a supportive framework for certain organs.

Question 20

What are the two types of dense connective tissue?

Answer 20

• Dense regular connective tissue
• Dense irregular connective tissue

Question 21

What is dense regular connective tissue?

Answer 21

these are tissues that Make up tendons and ligaments, fibers are arranged in parallel bundles.

Question 22

What is dense irregular connective tissue?

Answer 22

Fibers interwoven into a mesh.

Question 23

What are examples of fluid connective tissue?

Answer 23

• Blood
• Lymph

Question 24

What is hyaline cartilage?

Answer 24

Has a glossy appearance and can be found in the trachea and nose.

Question 25

What is fibrocartilage?

Answer 25

Cartillage found in the vertebrae. Acts as a Shock absorber, helps with compressibility.

Question 26

Where can fibrocartilage be found?

Answer 26

Between the vertebrae.

Question 27

What is elastic cartilage?

Answer 27

Very elastic and found in the ear.

Question 28

What are the 3 types of muscle tissue?

Answer 28

* Skeletal muscle tissue * Cardiac muscle tissue * Smooth muscle tissue

Question 29

Describe skeletal muscle tissue?

Answer 29

It is Voluntary muscle with striations.

Question 30

Describe the characteristics of cardiac muscle tissue?

Answer 30

Involuntary muscle with striations and intercalated discs.

Question 31

Where is cardiac muscle tissue found?

Answer 31

In the heart.

Question 32

Describe the characteristics of smooth muscle tissue?

Answer 32

Involuntary muscle with no striations.

Question 33

Where is smooth muscle tissue found?

Answer 33

* Blood vessels * Digestive tract

Question 34

What are the main components of nervous tissue?

Answer 34

* Neurons * Glial cells

Question 35

What is the main function of neurons?

Answer 35

Communicates impulses and commands to other cells/tissues.

Question 36

What are glial cells?

Answer 36

Support cells of the neurons and nervous tissues.

Question 37

What are the 3 main structures of a neuron?

Answer 37

* Soma/Cell body * Dendrites * Axons

Question 38

What is the soma of a neuron? What can be found in the neuron?

Answer 38

Main body of the neuron, contains organelles. | Also known as the Cell Body

Question 39

What are dendrites?

Answer 39

these are branches of the neuron that Accept messages from other neurons. | Receives messages, or brings messages toward the cell

Question 40

What are axons?

Answer 40

Long processes that sends messages away from the cell body. | Takes message away, to other neurons