Muscles

Question 1

The average muscle fiber contraction cycles lasts about

Answer 1

0.1 seconds

Question 2

Cardiac muscle is classified as

Answer 2

Involuntary striated muscle

Question 3

Anaerobic muscle metabolism results in ____ formation as a result of incomplete glucose metabolism

Answer 3

Lactic acid
- Acetylome is a neutrons miter
- Glycogen is a storage form of glucose found in muscle
- Myoglobin is a storage form of oxygen found in muscle

Question 4

When the sternocephalicus muscle contracts what happens in the animal’s body

Answer 4

The head and neck are lowered

Question 5

The internal abdominal oblique muscle is partially named based on

Answer 5

The direction the fibers run

Question 6

The linea alba is a/an

Answer 6

Aponeurosis
- Epimysium is the membrane that surrounds a muscle
- Ligament connects bone to bone
- Tendon attaches muscle to bone

Question 7

All or nothing principle of muscle physiology, refers to

Answer 7

The contraction of a muscle fiber

Question 8

The diaphragm is composed of

Answer 8

Voluntary striated muscle

Question 9

Stretching the wall of the small intestines will result in

Answer 9

Increases force of visceral smooth muscle contraction

Question 10

When skeletal muscle contracts, which site undergoes the greatest movement

Answer 10

Insertion of the muscle

Question 11

The triceps contracts bronchi muscle is partially named based on

Answer 11

Its location

Question 12

Which structure of a muscle contains adipose tissue that contributes to the grossly visible marbling of meat

Answer 12

Perimysium

Question 13

The muscle in an animal that corresponds to the calf muscle in humans is the

Answer 13

Gastrocnemius muscle
- Biceps femocis muscle is connected to the femur
- Deep digital flexor muscles are located in the feet
- Quadricep femoris muscle is located on the cranial thigh area

Question 14

The outermost connective tissue layer of a muscle is the

Answer 14

Epimysium
- Endomysium surrounds a muscle fiber
- Perimysium surrounds a group of muscle fibers called a fascicle

Question 15

What type of muscle controls the movement of an animal’s skeleton

Answer 15

Voluntary striated muscle

Question 16

In muscle, the source of a phosphate molecule needed to recharge an ADP molecule to an ATP molecule is

Answer 16

Creatine phosphate

Question 17

Groups of cardiac muscle cells adapt their contraction rate to

Answer 17

The contraction rate of the fastest cell

Question 18

Which structures contain visceral smooth muscle

Answer 18

Stomach and urinary bladder

Question 19

Which three muscles make up the hamstring muscle

Answer 19

Biceps femoris, semitendmosis, Semimembranosus

Question 20

A skeletal muscle that contracts at the same time as the prime mover muscle and assists in carrying out the prime mover’s action is a/an

Answer 20

Synergist
- Agonist is the prime mover muscle
- Amagonsit would work against the prime movers
- Fixator muscles stabilize joints

Question 21

If the fibers of a muscle are running caudoventrally, in which direction are they running

Answer 21

To the back of the animal and down

Question 22

The contracting unit of a skeletal muscle is the

Answer 22

Sarcomere

Question 23

Which motor unit would an animal most likely use to move its eyeball

Answer 23

1 nerve fiber, 2 muscle fibers

Question 24

Smooth muscle is classified as

Answer 24

Involuntary nonstriated muscle

Question 25

The “pacemaker” of the heart is the sinoatrial node located in the wall of the

Answer 25

Right atrium

Question 26

The respiratory muscles that work together to increase the size of the thoracic cavity when they contract are the

Answer 26

Diaphragm and external intercostal muscles

Question 27

The two major sources of energy for normal muscle metabolism are

Answer 27

Glucose and oxygen

Question 28

Another name for a skeletal muscle cell is a skeletal muscle

Answer 28

Fiber

Question 29

The parasympathetic nervous system has this overall effect on the heart

Answer 29

It causes it to beat with less force
-The sympathetic nervous system (fight or flight) does the opposite

Question 30

Articular cartilage is made up of this

Answer 30

Hyaline

Question 31

Type of cartilage found in the external ear and in the epiglottis

Answer 31

Elastic

Question 32

Fibrous membrane that covers the outer surface of a bone

Answer 32

Periosteum

Question 33

A mature cartilage cell

Answer 33

Chondrocyte