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Kin 100 Anatomy > Chapter: 7, 8, 11 > Flashcards

Chapter: 7, 8, 11 Flashcards

1
Q

What bones does the pectoral girdle encompass?

A
  • S-shaped clavicle/ collarbone
  • Scapula/ shoulder blade
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2
Q

How does the clavicle connect with the pectoral girdle?

A
  • The clavicle articulates with the sternum’s manubruim; is the only direct connection between the axial skeleton and the pectoral girdle
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3
Q

How does the scapula connect with the pectoral girdle?

A

The scapula is attached to the clavicle anteriorly but has no connection to the actual axial skeleton; instead skeletal muscles and ligaments support it.

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4
Q

What is the only bone that attaches to the arm?

A

The clavicle

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5
Q

What kind of bone is the clavicle?

A

A long bone

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6
Q

How do you identify position of the clavicle you are holding?

A
  • Rounded end of the clavicle comes to sternum
  • Flat end faces the outside of the body
  • Roughness on the bone is on the bottom
  • Smoothness on the bone is on the top
  • The bone sticks out anteriorly and curves back posteriorly
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7
Q

What is a fossa?

A

Where muscle attaches

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8
Q

What do ligaments do?

A

Connects bone to bone

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9
Q

Muscles associated with the pectoral girdle and upper limbs can be divided into four groups:

A
  • Muscles that position the pectoral girdle***
  • Muscles that move the arm***
  • Muscles that move the forearm and hand
  • Muscles that move the hand and fingers
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10
Q

The movements involving trapezius positioning the pectoral girdle

A
  • elevation and depression
  • Retract upwards (trap pulls on scapula to rotate)
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11
Q

The movements involving rhomboideus positioning the pectoral girdle

A
  • Adduction
  • Downward/ medial rotation
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12
Q

The movements involving lever scapulae positioning the pectoral girdle

A
  • Elevates scapula
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13
Q

The posterior muscles that position the pectoral girdle

A
  • Trapezius
  • Rhomboideus
  • lever scapulae
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14
Q

The anterior muscles that position the pectoral girdle

A
  • Pectoralis Minor
  • Serratus anterior
  • Subclavious
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15
Q

The movements involving the pectorals minor positioning the pectoral girdle

A
  • Depression
  • Protraction
  • Downwards rotation
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16
Q

The movements involving the serratus anterior in positioning the pectoral girdle

A
  • Protraction
  • Upward rotation
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17
Q

The movements involving the subclavious in positioning the pectoral girdle

A
  • Pulls forward
  • Depression
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18
Q

Origin of levator scapulae

A

Transverse processes of first four cervical vertebrae

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19
Q

Insertion of the levator scapulae

A
20
Q

Action of the levator scapulae

A

Elevates scapula

21
Q

Innervation of the scapula

A

Cervical nerves
Cy-C, and dorsal scapular nerve (Cs)

22
Q

Origin of pectoralis minor

A

Anterior surfaces and superior margins of ribs 3-5 or 2-4 and the fascia covering the associated external intercostal muscles

23
Q

Insertion of pectoralis minor

A

Coracoid process of scapula

24
Q

Action of the pectoralis minor

A

Depresses and protracts shoulder; rotates scapula so glenoid cavity moves inferiorly (downward rotation); elevates ribs if scapula is stationary

25
Q

Innervation of pectoralis minor

A

Medial pectoral nerve (G,, T,)

26
Q

Origin of the rhomboid major

A

Ligamentum nuchae and the spinous processes of vertebrae T2 to T5

27
Q

Insertion of the rhomboid major

A

Vertebral border of scapula from spine to inferior angle

28
Q

Action of the rhomboid major

A

Adducts and performs downward rotation of the scapula

29
Q

Innervation of the rhomboid major

A

Dorsal scapular nerve (C5)

30
Q

Origin of the rhomboid minor

A

Spinous processes of vertebrae C2 - T1

31
Q

Insertion of the rhomboid minor

A

Vertebral border of scapula

32
Q

Action of the rhomboid minor

A

Adducts and performs downward rotation of the scapula

33
Q

Innervation of the rhomboid minor

A

Dorsal scapular nerve (C5)

34
Q

Origin of serratus anterior

A

Anterior and superior margins of ribs
1-8, 1-9, or 1-10

35
Q

Insertion of serratus anterior

A

Anterior surface of vertebral border of scapula

36
Q

Action of the serratus anterior

A

Protracts shoulder; rotates scapula so glenoid cavity moves superiorly (upward rotation)

37
Q

Innervation of the serratus anterior

A

Long thoracic nerve (C5 - C7)

38
Q

Origin of the subclavius

A

First rib

39
Q

Insertion of the subclavius

A

Clavicle (inferior border of middle 1/3)

40
Q

Action of the subclavius

A

Depresses and protracts shoulder

41
Q

Innervation of the subclavius

A

Nerve to subclavius (C5 - C6)

42
Q

Origin of the trapezius

A

Occipital bone, ligamentum nuchae, and spinous processes of thoracic vertebrae

43
Q

Insertion of the trapezius

A

Clavicle and scapula (acromion and scapular spine)

44
Q

Action of the trapezius

A

Depends on active region and state of other muscles; may elevate, retract, depress, or rotate scapula upward and/or clavicle; can also extend neck when the position of the shoulder is fixed

45
Q

Innervation of the trapezius

A

Accessory nerve (XI)

Kin 100 Anatomy (3 decks)

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