Bio 223A Exam 3

Question 1

What is muscle atrophy?

Answer 1

When muscle appears smaller than due to a lack of wasting muscle tissue

Question 2

What are cramps

Answer 2

A painful, involuntary contraction of a muscle

Question 3

What is muscle dystrophy?

Answer 3

A group of genetic diseases that cause progressive weakness and loss of muscle mass

Question 4

What is the origin of a muscle?

Answer 4

Muscle starches on bones, Origin: attachment of a muscle on the more stable bone

Question 5

What is the insertion of a muscle?

Answer 5

Insertion: attachment of a muscle on the more moveable bone

Question 6

What is synergist?

Answer 6

Assist the agonist for a specific action at a joint, make movements for accurate and fluid

Question 7

What is antagonist?

Answer 7

Anatagonist is a muscle particularly one that works opposite to the action of the primary muscle

Question 8

What do we call muscles that have their fascículo arranged like barbs of a feather along a common tendon?

Answer 8

Pénnate (Bipennate)

Question 9

What kind of muscles act as a sphincter?

Answer 9

Circular fascicle

Question 10

The muscle extensor digitorum longus is named on what basis?

Answer 10

Size, location and action

Question 11

What is the muscle trapezius named for? Shape? Length. Function?

Answer 11

Shape

Question 12

When you say quadracep femoris, what is the name based on.

Answer 12

Four- headed muscle and location

Question 13

If you hyperextended your head, which class lever system does it represent?

Answer 13

First class lever

Question 14

If you flex your elbow, which class lever system does it represent?

Answer 14

Third class lever

Question 15

If you flex your elbow, which class lever system does it represent?

Answer 15

Third class lever

Question 16

If you contract your left sternocleidomastiod, what would happen to your head?

Answer 16

It would rotate

Question 17

Raising your eyebrow is the action of which muscle?

Answer 17

Frontalis

Question 18

Puckering your lips?

Answer 18

Orbicularis oris

Question 19

Chewing gum

Answer 19

Temporalis, master, buccinator

Question 20

If you have hypertrophied mental is muscle, what would you have?

Answer 20

Dimpled chin

Question 21

What is the major movement of a muscle that is used during breathing?

Answer 21

Diaphragm

Question 22

What type of contractions would your abdominal muscles do against your vertebral column?

Answer 22

Isometric contractions

Question 23

What are the muscles of the rotator cuff? What are their function?

Answer 23

Supraspinatus, infraspinatus, Teres minor, subscapularis

Question 24

Someone injures their shoulder hitting a ball high up, which muscle of the rotator cuff would be damaged?

Answer 24

Supraspinatus

Question 25

What muscle raises your arm to your shoulder level?

Answer 25

Deltoid

Question 26

Which muscle group in your forearm are flexors?

Answer 26

Flexor carpi

Question 27

Which muscles group in your forearm are extensors?

Answer 27

Extensor carpi ulnaris

Question 28

What muscle flexes the wrist?

Answer 28

flexor carpi radialis, and flexor carpi ulnaris.

Question 29

Extensor policies radials, what does this muscle move?

Answer 29

Extends the thumb

Question 30

Thenarand hypothenar muscles control what?

Answer 30

Thumb

Question 31

If your sprinter and you hold your stance, which one of your muscles is contracted?

Answer 31

Gluteus Maximus

Question 32

What is the largest buttock muscle?

Answer 32

Gluteus Maximus

Question 33

What is the site for gluteal injection?

Answer 33

Gluteus medius

Question 34

If you give an injection on the interior aspect of your thigh, what muscle are you injecting?

Answer 34

Rectus femoris

Question 35

What muscles constitute the quadracep femoris?

Answer 35

Rectas femoris, vastus laterales, vastus medialis, vastus intermedialis

Question 36

Biceps femoris make up which muscle group

Answer 36

Hamstrings

Question 37

Which muscles for. The bulging of the calf?

Answer 37

Gastrocnemius and soelus

Question 38

What muscles is inserted on the calcaneus by the Achilles tendon?

Answer 38

Gastrocnemius

Question 39

What is the function of the tensor fascia latae?

Answer 39

Hip joint flexión, abduction, medial rotation: assists in flexión of the thigh

Question 40

Refractory period( absolute)

Answer 40

The time where the muscle does not respond to stimulus

Question 41

Refractory period (relative)

Answer 41

relative;;a period after firing when a neuron is returning to its normal polarized state and will fire again only if the incoming message is much stronger than usual

Question 42

Types of muscles

Answer 42

Smooth, cardiac, skeletal

Question 43

What is a triad?

Answer 43

Two terminal cisternae and a t tubule