Skeleton And Muscles

Question 1

List different types of muscles found in the body

Answer 1

Skeleton muscle cardiac muscle smooth muscle

Question 2

Describe skeletal muscle and determine where each is found in the body

Answer 2

•it has striated cells with multiple nucleus
• they are cylindrical
•is voluntary
•function in the voluntary movement of the body
Skeleton muscles are all the muscles attached to the bones

Question 3

Cardiac muscles

Answer 3

Has branching striated cells with each a single nucleus
is involuntary
functions in pumping the blood contain more mitochondria for releasing energy
nucleus in centre of each cell
Occurs in the wall of the heart

Question 4

Smooth muscle

Answer 4

Has spinal shaped cells each with a single nuclei
cells have no striations
functions in movement of substances in lumens of the body
is involuntary
found in the lumens of the body eg vessel intestines

Question 5

Discuss how the skeleton and muscles are organised to support the body

Answer 5

Most of the soft organs and tissues of the body are attached to the skeleton
Best supports them preventing them from falling down and becoming entangled on each other

Question 6

Protection

Answer 6

The skull protects the brain the inner ear and eyes
the vertebral column protects the heart and lungs
the pelvis girdle
protects the organs of the lower abdomen

Question 7

Movement

Answer 7

The bones and joints act as levers
Muscles attached to the bones contract causing the bones to move about the drains this allows movement of the body part or the whole body

Question 8

Bone joints

Answer 8

Urban joint is a place or point where two bones meet

Question 9

Parts of a synovial joint

Answer 9

Ligaments
fibrous joints capsule
Joint cavity filled with synovial fluid
Articular cartilage
Sonowal membrane

Question 10

Muscles and movements

Answer 10

A skeletal muscle tissue contains a long strip muscle fibres attached to the bones the fibres are able to contract quickly and powerfully causing the bouns to move

Question 11

Tendons

Answer 11

Are strips of fibres which connects to the muscles to bones

Question 12

Antagonistic muscles

Answer 12

Pizza pairs of muscles which work against each other at a joint

Question 13

Flexor muscles

Answer 13

Other muscles which bends at the joints

Question 14

Extensor muscles

Answer 14

The muscles which straighten that joints