Tissue types

Question 1

What are the four primary tissue types?

Answer 1

Epithelial
Connective
Muscular
Nerve

Question 2

What makes something an organ?

Answer 2

A discrete boundary with two or more tissue types.

Question 3

What makes up a tissue?

Answer 3

A cell and matrix

Question 4

True or false -

Matrix is made of fibers and ground substance

Answer 4

True

Question 5

___________ is nonliving matter secreted by cells.

Answer 5

Matrix

Question 6

What tissue type lines and protects?

Answer 6

Epithelial tissue

Question 7

True or false -

Epithelial tissue is very vascular with lots of blood vessels.

Answer 7

False - Epithelial tissue is avascular that have little blood flow and relies on connective tissue for nutrients.

Question 8

Explain why epithelial tissue has a high mitotic rate.

Answer 8

It is high because that need to replace cells often. Think about skin cells coming off or needing to replace cells in the stomach. They need new cells because they use cells.

Question 9

What is the arrangement of epithelial tissue?

Explain each section.

Answer 9

Basement membrane - between the epithelial tissue and the CT. It is used to anchor the tissue together and is used to regulate materials and growth factors
Base surface - facing the basement membrane
Apical surface - facing away.

Question 10

What are the 6 functions of epithelial tissue?

Answer 10

Protect - injury and infection (epidermis and stomach)
Produce and release - Secretion of chemicals (sweat, and mucus)
Excretes waste - CO2 and bile
Absorbs chemicals - Small intestines
Filters - kidneys
Sense stimuli - nerve endings

Question 11

How are epithelial tissue classified?

Answer 11

By the numbers of layers and the shape of cells

Question 12

True or false -

Stratified epithelium tissue has every cell touching the basement membrane.

Answer 12

False - stratified cells rest on top of each other and can be 2-20 cells thick.

Question 13

What type of epithelial tissue is only one layer?

Answer 13

Simple epithelium has every cell touching the basement membrane.

Question 14

What type of tissue has a greater amount of matrix then cells?

Answer 14

Connective tissue, the cells are not in direct contact

Question 15

________ is a CT that does not have much blood flow.

Answer 15

Cartilage

Question 16

True or false -

CT is the second most abundant type of tissue after muscular tissue.

Answer 16

False - CT is the most abundant tissue type and have the most variety

Question 17

What are the 8 functions of connective tissue?

Answer 17

Binding structures - tendons and fat
Support - bones and cartilage
Protection - Fat around kidneys and eyes
Immune response - White blood cells
Movement - joints, vocal cords, and bone levers
Storage - Fat reserve, bone for calcium
Heat protection - brown fat is what produced heat
Transport - Blood, gases, nutrients and waste

Question 18

What are the four categories of CT?

Answer 18

Fibrous - Loose and dense
Adipose - Fat
Supportive - Cartilage and bone
Fluid - Blood

Question 19

True or false -
There are four types of matrix found in CT
(Name them)

Answer 19

False - there are three types of matrix
Collogenous fibers - Collagen (25% protein) for flexibility and strength
Elastic fiber - elastin, great flexibly and allows for stretching an recoil
Reticuler fibers - thin and branching fibers that are not strong.

Question 20

What are the four main CT cells?

Answer 20

Fibroblasts - produce fibers/ground substance
Macrophages - immune response
Leukocytes - White blood cells
Adipocytes - Not adipose tissue

Question 21

Empty space = _____________

Answer 21

Ground substance

Question 22

Explain loose CT

Answer 22

Found between tissues and organs as a way to bind. They are widely spaced and have no arrangement like a web. Lot of ground substance

Question 23

Explain dense CT

Answer 23

found between organs and tissues and is bound tightly. Very minimal ground substance due to the tight spacing.

Question 24

What type of CT cell has a constant turn over of cells?

Answer 24

Adipose tissue.

Question 25

What are the two types of adipose tissue and what are they good for?

Answer 25

White adipose - is most abundant in adults and is used for insulation and anchoring and cushioning
Brown adipose - is in children. It has lots of blood vessels and is heat generating because it is the breaking down of fat.

Question 26

Which of the CT has the least amount of blood flow?

Answer 26

Supportive connective tissue, slow healing

Question 27

True or false -

The three types of supportive CT are hyaline, elastic, and fibroblasts.

Answer 27

False - the three kinds are hyaline, elastic, and fibrocatilage.

Question 28

What are the two types of osseous tissue?

Answer 28

Compact and spongy

Question 29

True or false -

Plasma is a ground substance

Answer 29

True - it is the ground substance for blood

Question 30

Why is blood considered a CT?

Answer 30

Fibers are needed to be classified and clotting is fibers for the blood

Question 31

What cell type is found in the brain?

Answer 31

Nervous tissue

Question 32

What are the two cells types for nervous tissue?

Answer 32

Neurons - detect stimuli

Neuroglia - protect and assist the neurons

Question 33

How do you differentiate muscle cells from other cells?

Answer 33

They are elongated cells that are specialized to contract and exert force.

Question 34

What are the three types of muscle cells?

Answer 34

Smooth - Lining of organs
Cardiac - heart muscles
Skeletal - normal muscle