Muscle - Connective Tissue 4

Question 1

4 main functions of muscle

Answer 1

Heat production
Posture
Joint stability
Movement

Question 2

Importance of muscle tissue

Answer 2

Movement
Speaking
Chewing
Controls breathing, heartbeat and digestion
Temperature regulation
Vision

Question 3

3 types of muscular tissue

Answer 3

Skeletal
Smooth
Cardiac

Question 4

Skeletal

Answer 4

Moves bones of skeleton
Striated - alternating light and dark bands under microscope
Consists of parallel, non-branching multi nucleated muscle fibres united together in bundles.
Surrounded by a sheath - the sarcolemma

Question 5

Skeletal - voluntary or involuntary

Answer 5

Voluntary - consciously controlled
Subconsciously to some extent - diaphragm contracts and relaxes with no control

Question 6

Smooth muscle

Answer 6

Located in walls of hollow internal structures - blood vessels, airways etc
Lacks striating on skeletal and cardiac
Usually involuntary
Slow sustained mode of contraction
Spindle shaped cells - one central nucleus
No distinct sarcolemma - fine membrane covers tissue

Question 7

Function of smooth muscle

Answer 7

Moves food down oesophagus
Urine down bladder
Regulates diameter of blood vessels
Controls diameter of respiratory passageways

Question 8

Cardiac muscle

Answer 8

Only found in walls of heart
Striated
Involuntary

Question 9

Main function of cardiac muscle

Answer 9

Involuntary propels blood to and form heart