Muscular Flashcards Preview

Anatomy & Physiology > Muscular > Flashcards

Flashcards in Muscular Deck (39):
1

What type of muscle is NOT striated?

Smooth muscle

1

A muscle or muscle group that opposes the action of a prime mover is?

antagonist

1

What are 2 actions of skeletal muscle?

To move bones and generate heat

1

Muscles that contract without the need for external stimulation

cardiac and smooth

2

Muscle that has intercalated disks

Cardiac

3

A muscle that moves a limb away from the midline is called

an abductor

4

A broad sheet of fibrous tissue that attaches two muscles or a muscle to a bone. Ex. Linea alba.

Aponeuroses

5

What are two types of smooth muscle?

Visceral smooth muscle and multiunit smooth muscle.

5


What is the origin, insertion and action of the splenius muscle?

Origin: Fascia along the middorsal line of the neck

Insertion: Lambdoidal ridge of the occipital bone.

Action :Lateral flexion of the head.

6

What are three functions of the muscular system?

1.Produce movement of the body and parts.

2.Maintains posture

3.Produces heat

6

Skeletal muscle cells are______?

Multinucleated

8

3 different types of muscle make up the muscular system, what are they?

skeletal muscle, cardiac muscle, and smooth muscle

8

What are the 2 muscles that help in expiration?

internal intercostal and abdominal muscles

9

What are the main inspiratory muscles?

Diaphragm and the external intercostal muscles

10

what are the 3 phases of a single muscle fiber contraction

latent phase, contracting phase, relaxation phase

12

what are the 2 types muscles of respiration

inspiratory muscles,  expiratory muscles

14


cardiac muscle is also know as ?

involuntary striated muscle

15

List the layers of the skeletal muscle

Muscle fiber, fascicle, endomysium, perimysium, epimysium.

15

What are the muscle's attachement sites called and which is more stable?

Origin of the muscle and insertion of the muscle. Origin of the muscle is more stable.

16

What is the purpose of the intercalated disks?

They securely fasten the muscle cells together and transmit impulses from cell to cell in order to contract.

17

What muscle is found all over the body in places such as eyes, stomach and urinary bladder?

Smooth muscle

19

What muscle is controlled by the conscious mind and moves the bones of the skeleton so the animal can move?

Skeletal muscle

21

What is a synergist?

A muscle that contracts at the same time as a prime mover and assists it in carrying out its action.

22

what is special about the insertion of the muscle

it undergoes most of the movement when a muscle contracts.

23

the diaphragm is made of what type of muscle

Skeletal muscle

24

Which type of smooth muscle is large and relatively powerfull

Visceral smooth muscle

27

Cardiac and smooth muscle are voluntary or involuntary

Involuntary

28

T or F skeletal muscle is voluntary

True

29

What are 2 proteins that function in muscle contraction?

Actin and Myosin

30

What is a common neurotransmitter used to signal muscle contraction?

Acetylcholine

31

One nerve fiber and all the muscle fibers it innervates is?

Motor unit

32

What is the action of the skeletal muscle

To move the bones, and generate heat

32

The masseter muscles origin is ________arch, its insertion point is ramus of the _________. Without this muscle animals would not be able to elevate their mandible.

Zygomatic & mandible

35

which type of muscle does not have sarcomeres? 

smooth

36

Which muscle has little or no attachment to bones?

cutaneous muscle

37

What is a sarcomere? 

The area from 1 Z line to another Z line

37

T or F

Sarcomere contraction is All or Nothing? 

True

38

what are two of the main muscles that raise the head and neck

splenius muscle

trapezius muscle

39

Muscles attach to bones at both ends by what?

tough, fibrous connective tissue band called tendons.