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Week 5 & 6-Myology/ Skeletal Muscle > Skeletal Muscle > Flashcards

Skeletal Muscle Flashcards

1
Q

What is the skeletal muscles function?

A
  1. Movement
  2. Heat protection
  3. Posture and body support
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2
Q

What are the characteristics of skeletal muscle?

A

Excitability
Contractility
Extensibility
Elasticity

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3
Q

A fibrous cord or band that connects a muscle to its bony attachment.

A

Tendons

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4
Q

Broad flat tendinous sheath, attaches muscle to bone.

A

Aponeurosis

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5
Q

Connective tissue that surrounds muscle fibers.

A

Endomysium

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6
Q

Connective tissue that surrounds fasciculi.

A

Perimysium

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7
Q

Connective tissue that surrounds entire muscle.

A

Epimysium

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8
Q

Connective tissue that covers muscle and attaches to skin.

A

Fascia

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9
Q

4 Important things to know about skeletal muscles.

A
  1. Skeletal muscles are called voluntary muscles.
  2. Skeletal muscles are striated /under the microscope
  3. Skeletal muscles produce movement by shortening/ pull and never push.
  4. The fleshly part of the skeletal muscle is called the muscle belly.
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10
Q

The primary mover of a joint.

A

Agonist

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11
Q

Actions opposite of agonist.

A

Antagonist

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12
Q

Muscles work together

A

Synergist

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13
Q

Steady the proximal portions of a limb while movement is occurring in the distal part

A

Fixators

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14
Q

Flex a joint.

A

Flexors

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15
Q

Extend a joint.

A

Extensors

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16
Q

Muscle Architecture: With parallel fibers, often associated with an aponeurosis, external oblique.

A

Flat

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17
Q

Muscle Architecture: Strap-like, good endurance, not strong,

A

Parallel.

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18
Q

Muscle Architecture: Has a spindle shape, round and thick and tapers at the ends, biceps brachii.

A

Fusiform muscle

19
Q

Muscle Architecture: Close body openings, orbicularis oris.

A

Sphincter

20
Q

Muscle architecture: fibers converge on a tendon. 3 types, unipennate, bipennate and multipennate.

A

Pennate

21
Q

General Somatic Efferent

A

Motor neuron

22
Q

General Somatic Afferent

A

Sensory neuron

23
Q

A single motor neuron and all of the muscle fibers it innervates.

A

Motor Units

24
Q

Usually the proximal end of the muscle, the less movable of the two points of attachment of a muscle, that end which remains fixed or stationary.

A

Origin of a muscle

25
Q

Usually the distal end of the muscle, the movable end, that end which moves in relation to the rest of the skeleton.

A

Insertion of a muscle

26
Q

Wrinkles the forehead

A

Epicranius

27
Q

Closes the eye

A

Orbicularis

28
Q

Widens the nostrils

A

Nasalis

29
Q

Draws angle of mouth laterally

A

Risorius

30
Q

Pucker muscle

A

Orbicularis

31
Q

Elvis muscle

A

Levator labii superioris

32
Q

Smile muscle

A

Zygomaticus

33
Q

Frown muscle

A

Depressor Anguli oris

34
Q

Pout muscle

A

Depressor labii inferioris

35
Q

Raises upper lid

A

Levator palpebrae superioris

36
Q

Fleshy base of the thumb, formed by 3 muscles that move the thumb all innervated by the median nerve.

A

Thenar eminence

37
Q

The elongated fleshy bulge at the base of the little finger, formed by 3 muscles that move the little finger all innervated by the ulnar nerve

A

Hypothenar eminence

38
Q

What is this shape called?

A

Fusiform

39
Q

What is this muscle shape?

A

Parallel

40
Q

What is this muscle shape called?

A

Convergent

41
Q

What is this muscle shape called?

A

Unipennate

42
Q

What is this muscle shaped called?

A

Bipennate

43
Q

What is this muscle shape called?

A

Multipennate

44
Q

What is this muscle shape called?

A

Cellular

Week 5 & 6-Myology/ Skeletal Muscle (11 decks)

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