Histology Pt 1

Question 0

The study of cells

Answer 0

Cytology

Question 1

The study of tissues

Answer 1

Histology

Question 2

A group of associated cells and their intercellular substance working together to perform a specific function or functions.

Answer 2

Tissue

Question 3

What are the four tissue categories?

Answer 3

1. Epilethium
2. Muscle
3. Nervous
4. Connective Tissue

Question 4

What tissue has small cells closely packed together, can be apical or luminal surfaced, is avascular, and has a basement membrane?

Answer 4

Epilethium

Question 5

What are the four types of epilethium tissue?

Answer 5

1. Simple squamous epilethium
2. Simple cuboidal epilethium
3. Simple columnar epilethium
4. Stratified squamous epilethium

Question 6

Single layer of cells

Answer 6

Simple

Question 7

More than 1 layer of cells

Answer 7

Stratified

Question 8

Very thin, scale-like

Answer 8

Squamous

Question 9

Cube-like

Answer 9

Cuboidal

Question 10

Longer than wide

Answer 10

Columnar

Question 11

What tissue’s function is absorption, and is located in the alveoli or lungs, kidney, glomerulus, and the walls of capillaries?

Answer 11

Simple squamous epilethium

Question 12

What tissue has a function of lining cavities, ducts, and tubules, and is located in the ducts, tubules, and kidney tubules?

Answer 12

Simple cuboidal epilethium

Question 13

What tissue produces mucus, has a special feature of a Goblet cell, and is located in the respiratory tract?

Answer 13

Simple columnar epilethium

Question 14

What tissue’s function is protection, has special features of stratum corners, stratum basale, and keratin, and is located in the skin and vagina?

Answer 14

Stratified squamous epilethium

Question 15

Describe a cell that would tell you where you would find a simple squamous epilethium tissue, and list the cell’s components.

Answer 15

Cheek cell; flat; cell membrane, nucleus, cytoplasm

Question 16

Describe a cell that would tell you where you would find a simple cuboidal epilethium tissue.

Answer 16

Thyroid; cell nuclei often oval shaped

Question 17

List a columnar epilethium tissue’s cell’s components and describe the cell nuclei shape.

Answer 17

Cell nuclei are often oval and arranged in rows; Goblet cells

Question 18

List the stratified epilethium tissues.

Answer 18

Stratum corneum
Stratum basale
1. Melanocytes - produce melanin
2. Merkel’s Discs - sensory structures
3. Keratinocytes - make up most of the cells of the skin
4. Langerhan’s cells - immune cells of the skin
Layers of epilethium in between

Question 19

What are the characteristics of muscle tissue?

Answer 19

Elongate, tube-shaped cells (fibers), specialized for contraction, excitable: can propagate and electrical charge, and when contract produce movement

Question 20

What are the examples of muscle tissue?

Answer 20

Skeletal, cardiac, and smooth

Question 21

What muscle tissue is peripherally multinucleate, has distinct striations, and provides voluntary movement?
(Hint: it is located in the arms and legs.)

Answer 21

Skeletal

Question 22

What muscle has intercalated discs, is short-branched, has 1-2 nuclei, and has striations (less distinct)?
(Hint: it is located in the heart.)

Answer 22

Cardiac

Question 23

What muscle is large, has a central, football-shaped nucleus, and has no striations?
(Hint: it is located in the stomach, intestines, and uterus.)

Answer 23

Smooth

Question 24

What are the characteristics of nervous tissue?

Answer 24

Highly specialized tissue, responsible for generating impulses, extremely long processes, and has two main cell categories

Question 25

What are the two main cell categories of nervous tissue? Describe them.

Answer 25

1. Neurons: functional cells of the nervous system i. Soma ii. Processes = extensions (axons and dendrites) 2. Neurologia: protects and supports neurons

Question 26

What is the function of nervous tissue?

Answer 26

Produces impulses and electrical signals for communication in the body

Question 27

Where is the nervous tissue located?

Answer 27

Brain and spinal cord, also peripheral nerves

Question 28

What are the cell components of nervous tissue?

Answer 28

Neurons, neuroglial cells, soma of a neuron, nucleus of a neuron, and processes (axons and dendrites)