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Anatomy 2 > Exam 1: Lecture 4-11 > Flashcards

Exam 1: Lecture 4-11 Flashcards

1
Q

Where does the Teres Major originate and insert? Action? Blood Supply? Innervation?

A

Origin: Lower lateral border of scapula

Insertion: Medial lip of intertubercular groove

Action: Internal rotation, extension, adduction (same as lats)

Blood Supply: subscapular artery, scapular circumflex artery

Innervation: lower subscapular n.

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2
Q

Where does the serratus anterior originate and insert? Action? Blood Supply? Innervation?

A

Origin: Lateral region of rib 1-8

Insertion: Medial border of scapula

Action: Scapular protraction and upward rotation

Blood supply: Lateral thoracic artery + superior thoracic artery

Innervation: Long thoracic n.

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3
Q

T or F? The pec major forms the anterior axillary fold?

A

True

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4
Q

Where does the pec major originate and insert? Action? Blood Supply? Innervation?

A

Origin (2 of them):
- Medial 1/2 of clavicle
- Sternum, costal cartilage 1-7

Insertion: lateral lip of intertubercular groove

Action: Adduction, internal rotation, horizontal adduction, flex extended arm, extend flexed arm

Blood supply: Pectoral branch of thoracoacromial trunk

Innervation: Lateral and medial pectoral nerves

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5
Q

The clavicular portion of the pec major performs what action?

A

Flex extended arm

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6
Q

The sternal portion of the pec major performs what action?

A

Extend flexed arm

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7
Q

Which muscles attach to the bicipital groove?

A

Pec major, latissimus dorsi, teres major

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8
Q

Where does the pec minor originate and insert? Action? Blood Supply? Innervation?

A

Origin: Anterior ribs 3-5

Insertion: Coracoid process

Action: Downward rotation, anterior tilt, depression of scapula, elevates ribcage for respiration

Blood Supply: Pectoral branch of thoracoacromial trunk

Innervation: Medial pectoral n

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9
Q

Rounded back posture occurs when which muscle is tight?

A

Pec minor

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10
Q

Where does the subclavius originate and insert? Action? Blood Supply? Innervation?

A

Origin: Costal cartilage of rib 1

Insertion: Inferior surface of clavicle

Action: Stabilize SC joint, depress clavicle

Blood Supply: Clavicular branch of thoracoacromial trunk

Innervation: Nerve to subclavius

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11
Q

Where does the cephalic vein go?

A

Between the deltoid and pec major and drains into the axillary vein

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12
Q

Where does the basilic vein go?

A

Joins brachial vein and drains into the axillary vein

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13
Q

Where does the deltoid originate and insert?

A

Origin: Anterior portion of lateral 1/3 of clavicle, acromion, inferior/posterior scapular spine

Insertion: Deltoid tuberosity

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14
Q

What is the blood supply and innervation of the deltoid?

A

Blood Supply: Anterior and posterior humeral circumflex arteries, deltoid branch of thoracoacromial trunk

Innervation: Axillary n.

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15
Q

Which action does the anterior, middle, and posterior portion of the deltoid perform?

A

Anterior: Horizontal adduction, flexion, IR

Middle: abduction

Posterior: Horizontal abduction, extension, ER

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16
Q

Which structures sit in the radial (spiral groove)?

A

Radial nerve and deep brachial artery

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17
Q

T or F? The triceps lateral head and medial head attach to the radial groove

A

True

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18
Q

What is the olecranon process?

A

The tip of the elbow (part of the ulna)

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19
Q

T or F? The olecranon makes up the posterior border of the trochlear notch

A

True

20
Q

Where is the coronoid process located?

A

Inferior (distal) border of trochlear notch

21
Q

Where does the brachialis insert?

A

tuberosity of ulna

22
Q

Where does the supinator originate?

A

Supinator crest

23
Q

Describe the head of the radius?

A
  • Horizontal disc shape
  • Concave superior (articulates with capitulum)
  • Articulates with radial notch medially
24
Q

Where does the biceps brachii attach?

A

Radial tuberosity

25
Q

Which muscle attaches to the oblique line of the radius?

A

Flexor digitorum superficialis

26
Q

What are the 3 joints/articulations of the elbow?

A

Humero-radial: radial head articulates with capitulum of humerus

Humero-ulnar: trochlear notch of ulna articulates with trochlea of humerus

Proximal radioulnar joint: radial head articulates with radial notch of ulna

27
Q

What is the primary function of the annular ligament?

A

Prevent dislocation of radial head

28
Q

Describe the lateral (radial) collateral ligament

A
  • Runs from lateral epicondyle to annular ligament of radius
  • Prevents varus (outward) motion
29
Q

Describe the medial (ulnar) collateral ligament

A

Has 3 parts (triangular shaped)

  • Anterior part: Medial epicondyle to coronoid process of ulna (strongest)
  • Posterior part: Medial epicondyle to olecranon (weakest)

Transverse part: Coronoid process to olecranon

Prevents valgus (inward) motion

30
Q

What is cubitus valgus?

A

when the arm extends past 180 degrees

31
Q

What is carrying angle?

A

5-15 degrees of cubitus valgus (larger in females)

32
Q

What does the anterior compartment contain?

A

Biceps, brachialis, coracobrachialis

33
Q

Which artery supplies blood to the anterior compartment?

A

Brachial artery

34
Q

Where does the biceps brachii originate and insert? Action? Blood supply? Innervation?

A

Origin
- Short head: Coracoid process of the scapula
- Long head: Supraglenoid tubercle

Insertion: Radial tuberosity

Action: Elbow flexion, supination, shoulder flexion (long head)

Blood Supply: Brachial artery

Innervation: Musculocutaneous n.

35
Q

Where does the brachialis originate and insert? Action? Blood supply? Innervation?

A

Origin: Anterior surface of humerus

Insertion: Ulna tuberosity

Action: Elbow flexion

Blood Supply: Brachial artery

Innervation: Musculocutaneous n.

36
Q

T or F? Biceps tendon rupture is the most common tendon rupture in the UE

A

True

37
Q

Where is a biceps tendon rupture most likely to occur?

A

Proximal long head of biceps

38
Q

Where does the coracobrachialis originate and insert? Action? Blood supply? Innervation?

A

Origin: Coracoid process of scapula

Insertion: Mid humerus

Action: Shoulder flexion

Blood Supply: Brachial artery

Innervation: Musculocutaneous n.

39
Q

Which artery supplies the posterior compartment of the arm?

A

Deep brachial artery (travels with radial n.)

40
Q

How many sensory branches come off the radial nerve?

A

3

41
Q

Name the sensory branches that come off the radial nerve

A
  • Inferior lateral cutaneous n. (to the arm)
  • Posterior cutaneous n. (to the arm)
  • Posterior cutaneous n. (to the forearm)
42
Q

Where do the triceps originate and insert? Action? Blood supply? Innervation?

A

Origin:
- Long head: Infraglenoid tubercle of scapula
- Lateral head: Posterior surface of humerus (superior to radial groove)
Medial head: Posterior surface of humerus (inferior to radial groove)

Insertion: Olecranon process

Action: Shoulder extension, elbow extension

Blood Supply: Deep brachial artery

Innervation: Radial n.

43
Q
A
44
Q
A
45
Q
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Anatomy 2 (3 decks)

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