Muscles For Locomotion

Question 0

Cardiac muscle

Answer 0

Involuntary muscle found only in the heart, made of interconnected muscle fibres, adapted to generate and conduct electrical impulses for muscle contraction.

Question 1

Actin

Answer 1

Protein in muscle cells that makes up the thin filaments of myofibrils; functions in muscle contraction

Question 2

Involuntary muscle

Answer 2

Muscle in which contractions are not voluntary.

Question 3

Myofibril

Answer 3

Unit of muscle fibres composed of thick myosin protein filaments and thin actin protein filaments

Question 4

Myosin

Answer 4

Structural protein that makes up thick filaments of myofibrils. Functions in muscle contraction

Question 5

Sarcomere

Answer 5

Each section of a myofibril in muscle

Question 6

Skeletal muscle

Answer 6

A type of voluntary muscle that is attached to and moves bones of the skeleton

Question 7

Sliding filament theory

Answer 7

Theory that actin filaments slide toward each other during muscle contraction while the myosin filaments do not move

Question 8

Smooth muscle

Answer 8

Type of involuntary muscle found in the walls of internal organs and blood vessels. Most common function is to squeeze, exerting pressure inside the tube or organ it surrounds

Question 9

Voluntary muscle

Answer 9

Muscle that contracts under conscious control