Lab Week 5 (exam 2)

Question 1

What is tissue?

Answer 1

Group of cells that work together to perform a particular function

Question 2

What are the 4 basic kinds of tissues?

Answer 2

1) epithelium (epithelial- plural)
2) connective tissue
3) muscle
4) nerve

Question 3

What is epithelium tissue?

Answer 3

Covering of the human body

Ex: skin, lining of mouth and digestive system

Interfaces- way down in lungs between blood

Where glands come from

Used to describe by number of layers and shape

Question 4

What are the different layers of epithelium tissue and what are they?

Answer 4

1) simple- single layer of cells
2) stratified- multiple layers of cells
3) pseudostratified- single layer of cells but looks like many layers

Question 5

What are the different shapes of epithelium tissue?

Answer 5

1) squamous- wide cell but not tall (rectangle)
2) cuboidal- height and width are the same (square)
3) Columnar- height of cells is greater than width (rectangle standing up)

Question 6

What is connective tissue?

Answer 6

Consist of sparsely (spread out) distributed cells living amidst a whole bunch of non living stuff (matrix)

Question 7

What is matrix?

Answer 7

Non living stuff

Either solid, semisolid or liquid

Question 8

What are 3 types of connective tissue (CT)?

Answer 8

1) CT “proper” (classical)
2) supporting CT
3) Fluid CT

Question 9

What are the 2 types of CT Proper?

Answer 9

1) loose CT proper- a lot of fluid in matrix

2) dense CT proper- virtually no water

Question 10

What is the dense CT regular and irregular tissue?

Answer 10

Regular- protein fibers go in the same direction

Irregular- protein fibers cross cross

Question 11

What are the 2 types of loose CT proper tissue and explain

Answer 11

1) Areolar- true classical loose CT tissue

2) adipose- fat tissue

Question 12

What are the 2 types of dense CT proper and explain

Answer 12

1) ligaments- almost always connect bone to bone

2) tendons - connect bone to muscle

Question 13

What are 2 of supporting CT and explain

Answer 13

1) cartilage- (Hyaline) the matrix is semisolid

2) bone- matrix is solid

Question 14

What are 2 types of fluid CT and explain

Answer 14

1) blood- matrix is fluid

2) lymph- matrix is fluid, lymphatic system carried this,
Mostly white blood cells and liquid

Question 15

What are the 3 types of muscle tissue?

Answer 15

1) skeletal muscle
2) cardiac muscle
3) smooth muscle

Question 16

What is skeletal muscle?

Answer 16

Attached skeleton

Gives conscious movement

Cells are really large

Longated and cylinder

Many nuclei

Question 17

What is cardiac muscle?

Answer 17

Found in heart

A lot of branching tissue

Have intercalated discs

One intercalated discs activated then all are activated and are electrical

Question 18

What are intercalated discs?

Answer 18

Dark bands

All work together and form electrical current

Question 20

What is smooth muscle tissue?

Answer 20

Found in walls of varied organs

In digestive organs, walls of blood vessels, walls of tiny tube like structures in lungs

No striation

Question 21

Are skeletal muscles and cardiac muscle tissues striated bare striations?

Answer 21

Yes

Question 22

What are 2 types of nerve tissue and explain

Answer 22

1) neurons- rare, transmit nerve impulses

2) glial cells or neuroglia- perform supportive functions (more common)

Question 23

What does striation mean?

Answer 23

Thin little lines in cell