Tissues

Question 1

describe the structural levels of the human body

Answer 1

cells -> tissue -> organ -> organ system -> human

Question 2

write a description of each structural level

Answer 2

cells - small structures that perform life’s functions
tissue - are groups of cells
organ - different types of tissues working together
organ system - a group of organs that work together
human - living organism

Question 3

what are the major groups of tissue

Answer 3

• muscle tissue
• epithelial tissue
• nervous tissue
• connective tissue

Question 4

what is epithelial tissue

Answer 4

is a covering or lining tissue

Question 5

epithelial cells are joined very closely together, how and why do they vary in shape?

Answer 5

they vary in shape from thin to flat to column-shaped and cubed shape. They vary in shape to sit in different places.

Question 6

give three examples of where epithelial tissue can be found

Answer 6

• the outer layer of the skin
• intestines (covered)
• heart (covered)

Question 7

what does connective tissue provide?

Answer 7

connective tissue provides support for the body and helps to hold all parts together

Question 8

describe the arrangement of cells in connective tissue

Answer 8

the cells are not close together. they are separated from each other by large amounts of material that is not made up of cells

Question 9

what is the name of the non-cellular material in the spaces between connective tissue?

Answer 9

matrix

Question 10

give three examples of connective tissue

Answer 10

• cartilage
• ligaments
• tendonds

Question 11

describe the shape of muscle cells and how do they react to a stimulus

Answer 11

they are able to respond to a stimulus by contacting and becoming shorter

Question 12

what are the names of the three types of muscle tissue

Answer 12

• skeletal muscles
• smooth muscles
• cardiac muscles

Question 13

where is a skeletal muscle found and is it a voluntary or involuntary muscle types

Answer 13

makes up the muscles that are attached to a bone. we have voluntary control over these muscles

Question 14

what is it meant by the term “involuntary” in involuntary muscle?

Answer 14

muscles that are not under our conscious control

Question 15

give three examples of where the involuntary muscle tissue can be found in the body

Answer 15

• walls of the stomach and intestines
• walls of the blood
• the iris of the eye

Question 16

what is the more common name for cardiac muscle

Answer 16

the heart muscle

Question 17

what is the main function of the cardiac muscle tissue

Answer 17

when heart muscles contract it pumps the blood

Question 18

is the cardiac muscle involuntary or voluntary

Answer 18

involuntary

Question 19

what is the special name of the cells that make up the nervous tissue

Answer 19

neurons

Question 20

why do you think nerve cells have long projections extending from the cell body

Answer 20

so when a neuron is stimulated messages can be carried along these long projections from one part of the body to another

Question 21

what are three examples of where nervous tissue can be found

Answer 21

• brain
• spinal cord
• nerves