Muscular

Question 1

3 types of muscular Tissue

Answer 1

Skeletal muscle ( striated, voluntary)
Cardiac muscle ( striated, involuntary)
Smooth muscle ( non- striated, spindle, involuntary

Question 2

Electrical

Answer 2

(Action potentials) respond to stimulus

Question 3

Contractible

Answer 3

Shorten in length

Question 4

Extensible

Answer 4

Can extend/ stretch

Question 5

Elastic

Answer 5

Return to their original shape

Question 6

Sarcoplasmic reticulum

Answer 6

Ca2+ storage and release; terminal cisternae butt against T- tubule

Question 7

Filaments

Answer 7

Called myofilaments thin-acting and thick myosin arranged in compartments called sarcomers

Question 8

Myosin

Answer 8

pulls on actin/ filament slide inward

Question 9

Z discs

Answer 9

Move towards each other/ sarcomere shortens

Question 10

Sliding filament mechanism

Answer 10

Changes in the L band and H zone as the muscle contracts

Question 11

ATP in skeletal muscle

Answer 11

Source of oxygen in muscle. A diffusion of blood B blood from myoglobin

Question 12

Cardiac muscle

Answer 12

Intercalated disc/ contains desmosomes and gap junctions

Question 13

Smooth muscle

Answer 13

Starts more slowly and last longer than skeletal and cardiac muscle contractions

Question 14

Hyperplasia

Answer 14

Increase in number of fibers from satellite cells

Question 15

New smooth muscle

Answer 15

Develop from pericytes/ association with blood capillaries and small veins