Muscular System

Question 1

Synergist Muscle:
a- contract to cause an action
b- Stretch yield to the action of the agonist
c- stabilise the origin of the agonist
d- contract to stabilise intermediate joints

Answer 1

d

Question 2

Name the three muscle types

Answer 2

Skeletal
Cardiac
Smooth

Question 3

What are the four structure types of skeletal muscle

Answer 3

Long
Cylindrical
Multinucleate
Striations

Question 4

What are the four functions of skeletal muscles

Answer 4

Voluntary movement
Locomotion
Manipulation of the environment
Facial expressions

Question 5

Name the three structures of cardiac muscles

Answer 5

Branching
Striated
Uninucleated- intercalated discs

Question 6

What are the two functions of cardiac muscle

Answer 6

It contracts and propel blood into circulation
Involuntary control

Question 7

What are the three structures of smooth muscle

Answer 7

Spindle shape with central nuclei
No striation
Cells arranged closely to form sheets

Question 8

What are the two functions of smooth muscle

Answer 8

propels substances along internal passageway
Involuntary control

Question 9

What are the general functions of muscle tissue (5)

Answer 9

movement
posture
Regulate organ volume
Moving substances in the body
Heat production

Question 10

What type of property is this of muscle tissue
Respond to stimuli

Answer 10

Excitability

Question 11

What type of property is this of muscle tissue
Ability to contract when stimulated

Answer 11

Contractibility

Question 12

What type of property is this for muscle tissue
Ability to stretch or extend

Answer 12

Extensibility

Question 13

What type of property is this for muscle tissue
Ability to return to original length after stretching

Answer 13

Elasticity

Question 14

What is origin

Answer 14

One end of the muscle attached to a structure such as bone that remains stationary

Question 15

What is insertion

Answer 15

opposite end of origin where the muscle is moved by contraction

Question 16

What is belly

Answer 16

The part of the muscle that contracts

Question 17

What is tendon

Answer 17

where muscle attached to bone

Question 18

What is ligament

Answer 18

Attach bone to bone and stabilise the joint

Question 19

What is agonist

Answer 19

Contraction and cause an action

Question 20

What is antagonist

Answer 20

stretches and yeild to the action of the agonist

Question 21

What is synergist

Answer 21

contracts to stabilise intermediate joints

Question 22

What is fixator

Answer 22

Stabilise the origin of the agonist

Question 23

How doe skeletal muscle attach to bone

Answer 23

Tendons attach skeletal muscle tissue to bone throughout the body because they are made of tough connective tissue that have strong collagen fibres

Question 24

What is a bundle of muscle fibres called

Answer 24

Fasicle

Question 25

What surrounds the whole muscle

Answer 25

epimysium

Question 26

What surrounds the bundle of fibres

Answer 26

perimysium

Question 27

What surrounds individual muscle fibres

Answer 27

endomysium

Question 28

How does muscles get there striates appearance

Answer 28

overlapping of thin actin and thick myosin filaments

Question 29

What does actin and myosin create

Answer 29

myofilament

Question 30

What are the four effects of ageing of skeletal muscle

Answer 30

muscle fibres reduce in number and shrink in size Muscle become rigid and lose tone Muscle function reduce Bones become brittle and break easily