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Anatomy and Physiology > Anatomy Test: Muscles > Flashcards

Anatomy Test: Muscles Flashcards

1
Q

Myofibrils are composed of individual:

A

Myofilaments

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2
Q

Muscles are held in place and covered by:

A

Fascia

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3
Q

The functional unit of a muscle is the:

A

Sacromere

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4
Q

Thin filaments within a muscle fiber are called:

A

Actin

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5
Q

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

A

Acetylcholine

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6
Q

The energy source for muscle contraction is:

A

ATP

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7
Q

The A band in a myofibril is an area of:

A

Thick filaments

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8
Q

A sarcomere is defined as the section of fiber between:

A

Z lines

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9
Q

Tendons connect:

A

Muscles to Bones

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10
Q

The connective tissue that surrounds individual fibers is:

A

Endomysium

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11
Q

Skeletal muscles are:

A

Straited and Voluntary

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12
Q

Smooth muscles are:

A

Involuntary (Digestive)

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13
Q

Cardiac muscles are:

A

At the Heart

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14
Q

Skeletal muscles are responsible for moving:

A

Bones

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15
Q

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

A

Myocites

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16
Q

Connective tissue that surrounds the fascicles is:

A

Perimysium

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17
Q

What type of muscles are primarily voluntary?

A

Skeletal

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18
Q

What muscles are found in the heart?

A

Cardiac

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19
Q

What muscles are found in the digestive tract?

A

Smooth

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20
Q

What cell organelle provides the ATP needed for muscle activity?

A

Mitochondira

21
Q

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

A

Synaptic Cleft

22
Q

In a sarcomere, the I band is made of:

A

Actin

23
Q

In a sarcomere, the A band is made of:

A

Myosin

24
Q

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

A

Straited Appearance

25
Q

The energy source for muscle contraction is:

A

ATP

26
Q

The immovable ends of the muscle is the:

A

Origin of the Muscle

27
Q

The moveable end of the muscle is the:

A

The Insertion

28
Q

Muscle fatigue is likely due to a buildup of:

A

Lactic Acid

29
Q

A sarcomere is defined as the region between two:

A

Z Lines

30
Q

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

A

Rigor Mortis

31
Q

Myofibrils are composed of:

A

Thick and Thin Myofiloments

32
Q

Which type of connective tissue surrounds fascicles (bundles)?

A

Perimysium

33
Q

What type of tissues surrounds the entire muscles?

A

Epimysium

34
Q

Bundles of muscle fibers are called:

A

Fascicles

35
Q

The A bands are:

A

Dark

36
Q

The I bands are:

A

Light

37
Q

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

A

Zygomaticus

38
Q

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

A

Buccanator

39
Q

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

A

Orbicularis Oris

40
Q

The temporalis acts to ___.

A

Elevate the Mandible

41
Q

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

A

Medial

42
Q

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

A

Lateral

43
Q

The ___ can close the eye, as in blinking.

A

Orbicularis Oeuli

44
Q

The ___ can pull the head toward the chest.

A

Sternocleiodmastoid

45
Q

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

A

Platysma

46
Q

The muscle used to widen the nostrils is the ___.

A

Nasalis

47
Q

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

A

Mylohoid

48
Q

The ___ raises the eyebrows and moves the scalp.

A

Epicranius

49
Q

What are the 12 labels in the muscles of the head

A
  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

Anatomy and Physiology (4 decks)

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