Anatomy Test: Muscles

Question 1

Myofibrils are composed of individual:

Answer 1

Myofilaments

Question 2

Muscles are held in place and covered by:

Answer 2

Fascia

Question 3

The functional unit of a muscle is the:

Answer 3

Sacromere

Question 4

Thin filaments within a muscle fiber are called:

Answer 4

Actin

Question 5

This substance will cross the neuromuscular junction to communicate with individual muscle fibers:

Answer 5

Acetylcholine

Question 6

The energy source for muscle contraction is:

Answer 6

ATP

Question 7

The A band in a myofibril is an area of:

Answer 7

Thick filaments

Question 8

A sarcomere is defined as the section of fiber between:

Answer 8

Z lines

Question 9

Tendons connect:

Answer 9

Muscles to Bones

Question 10

The connective tissue that surrounds individual fibers is:

Answer 10

Endomysium

Question 11

Skeletal muscles are:

Answer 11

Straited and Voluntary

Question 12

Smooth muscles are:

Answer 12

Involuntary (Digestive)

Question 13

Cardiac muscles are:

Answer 13

At the Heart

Question 14

Skeletal muscles are responsible for moving:

Answer 14

Bones

Question 15

Muscles fivers are made up of individual fibers (not filaments) called:

Answer 15

Myocites

Question 16

Connective tissue that surrounds the fascicles is:

Answer 16

Perimysium

Question 17

What type of muscles are primarily voluntary?

Answer 17

Skeletal

Question 18

What muscles are found in the heart?

Answer 18

Cardiac

Question 19

What muscles are found in the digestive tract?

Answer 19

Smooth

Question 20

What cell organelle provides the ATP needed for muscle activity?

Answer 20

Mitochondira

Question 21

The gap between the nerve and the muscle is called the:

Answer 21

Synaptic Cleft

Question 22

In a sarcomere, the I band is made of:

Answer 22

Actin

Question 23

In a sarcomere, the A band is made of:

Answer 23

Myosin

Question 24

The dark and light fibers of the muscles give cells what kind of appearance?

Answer 24

Straited Appearance

Question 25

The energy source for muscle contraction is:

Answer 25

ATP

Question 26

The immovable ends of the muscle is the:

Answer 26

Origin of the Muscle

Question 27

The moveable end of the muscle is the:

Answer 27

The Insertion

Question 28

Muscle fatigue is likely due to a buildup of:

Answer 28

Lactic Acid

Question 29

A sarcomere is defined as the region between two:

Answer 29

Z Lines

Question 30

The condition where a body becomes stiff after death is called:

Answer 30

Rigor Mortis

Question 31

Myofibrils are composed of:

Answer 31

Thick and Thin Myofiloments

Question 32

Which type of connective tissue surrounds fascicles (bundles)?

Answer 32

Perimysium

Question 33

What type of tissues surrounds the entire muscles?

Answer 33

Epimysium

Question 34

Bundles of muscle fibers are called:

Answer 34

Fascicles

Question 35

The A bands are:

Answer 35

Dark

Question 36

The I bands are:

Answer 36

Light

Question 37

When the ___ contracts, the corner of the mouth is drawn upward and laterally when laughing.

Answer 37

Zygomaticus

Question 38

The ___ acts to compress the wall of the cheeks when air blown out of the mouth.

Answer 38

Buccanator

Question 39

The ___ causes the lips to close and pucker during kissing, whistling, and speaking.

Answer 39

Orbicularis Oris

Question 40

The temporalis acts to ___.

Answer 40

Elevate the Mandible

Question 41

The ___ pterygoid can close the jaw and pull it sideways.

Answer 41

Medial

Question 42

The ___ pterygoid can protrude the jaw, pull the jaw sideways, and open the mouth.

Answer 42

Lateral

Question 43

The ___ can close the eye, as in blinking.

Answer 43

Orbicularis Oeuli

Question 44

The ___ can pull the head toward the chest.

Answer 44

Sternocleiodmastoid

Question 45

The muscle used for pouting and to express horror is the ___.

Answer 45

Platysma

Question 46

The muscle used to widen the nostrils is the ___.

Answer 46

Nasalis

Question 47

The muscle used to elevate the hyoid bone during swallowing is the ___.

Answer 47

Mylohoid

Question 48

The ___ raises the eyebrows and moves the scalp.

Answer 48

Epicranius

Question 49

What are the 12 labels in the muscles of the head

Answer 49

1. Occipitalis 2. Temporalis 3. Orbicularis Oculi 4. Frontalis 5. Masseter 6. Buccinator 7. Zygomaticus minor & major 8. Orbicularis Oris 9. Trapezius 10. Splenius Capitis 11. Sternocleidomastoid 12. Platysma