Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Summer 24 > Anatomy lecture 2 > Flashcards

Anatomy lecture 2 Flashcards

1
Q

medial attachement=

A
  • origin
  • proximal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

lateral attachement=

A

insertion

= distal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pectoralis major

A
  • Proximal attachment: clavicular head, anterior 1/2 of medial clavicle, sternocostal head ribs 1-6
  • Distal attachment: lateral lip of intertubercular groove (sulcus) of humerus
  • Innervation: lateral and medial pectoral
  • action: adduction and medial rotation of humerus, draws scapula anteriorly and inferiorly
  • ex: climbing, throwing, pushing, hugging
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

pectoralis minor

A

proximal attachment: ribs 3-5
distal attachment: coracoid process of scapula
innervation: a medial pectoral nerve
action: stabilize scapula by drawing inferiorly and anteriorly rotating against thoracic wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Subclavius

A
  • proximal attachment: junction of 1st rib and its costal cartilage
  • Distal attachment: inferior surface of middle third of clavicle
  • innervation: subclavian nerve
  • action: actors and depresses clavicle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Serratus anterior

A
  • Proximal attachment: 1st to 8th ribs
  • Distal attachment: medial border of scapula
  • innervation: long thoracic nerve
  • action: move scapula forward, boxers muscle (hold scapula against wall)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the action of Trapezius ?

A
  • descending (superior) part elevates “shoulder shrugging”
  • ascending (inferior) part depresses and middle part retracts (pulls posteriorly) scapula
  • shoulder drop if injured
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the action of Latissimus Doris?

A
  • extend, adduction and medial rotation of shoulder joint (striking action ex blow, hammering, swimming, and rowing)
  • raises body towards arm during climbing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ability to bow hunt is impaired due to injury to

A

dorsal scapular nerve/levetator scapulae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

SSIT

A

Subscapularis-lesser tubercle
Supraspinatus-greater tubercle
Infraspinatus-
aTeres minor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

0-15 degrees of arm abduction

A

supraspinatous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

15-90 degrees of arm abduction

A

medial deltoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

> 90 degree of arm abduction

A

upper trapezius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

SITS for rotator cuff

A

Supraspinatus- helps deltoid abduct arm 15
Infraspinatus- laterally rotates arm
Teres minor- adducts and laterally rotate arm
Subscapularis- medially rotates and adducts arm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Rotator cuff injury common in

A

baseball pitcher
Will have pain in neck and at the tip of the shoulder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

All muscles will pull towards…

A

the origin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Brachial plexus

A

nerve supply to upper limb
-extends from cervical region to axilla
-formed by anterior rami of C5 to T1 (roots of brachial plexus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Anterior rami roots

A

C5-C8, T1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

anterior rami (roots)—->

A

trunks
——–>
divisions
——–>
cords
——->
terminal branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Trunks

A

-Superior trunnk
-Middle trunk
-Inferior trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Cords

A
  • Lateral cord
  • Posterior cord
  • Medial cord
22
Q

Terminal branches

A
  • musculocutaneous nerve
  • radial nerve
    -median nerve
    -ulnar nerve
23
Q

Brachial plexus injury

A

second most common postop peripheral neuropathy

24
Q

Axillary nerve

A

innervates the deltoid and teres minor

25
Q

Musculocutaneous nerve

A

sends fibers to coracobrachialis, biceps brachii and brachialis
(flexion at elbow)

26
Q

Median

A

branches to most of the flexor muscles of forearm and opponens pollicis
-pronation of forearm
-flexion of wrist
- opposition of thumb
-flexion of lateral three fingers

27
Q

Ulnar nerve

A

supplies the flexor carpi ulnarus and half of the flexor digitorum profundus
- flexion of wrist
- adduction of fingers
-flexion of medial two fingers

28
Q

Radial nerve

A

supplies ALL extensors of arm and forearm muscles
- extension at elbow
- supination of forearm
- extension of wrist and fingers

29
Q

Intercostobrachial nerve

A

-terminal cutaneous nerve
-can be blocked to reduce pain from tourniquet inflation during IV regional neural anesthesia

30
Q

Erb-Duchenne palsy

A

injury to superior trunk C5, C6 roots in newborn due to excess stretch during delivery that leads to tear of the roots.
Axillary, musculocutaneous and suprascapular nerves are paralyzed
-limb hangs by the side with adducted shoulder, forearm is pronated, waiter’s tip position

31
Q

Klumpke paralysis

A

injury of inferior trunk C8, T1
Damage to ulnar nerve. Claw hand.

32
Q

What is the action of the Pectoral’s Major?

A
  • Adduction and medial rotation of humerus
  • draws scapula anterior and inferiorly
  • (climbing, throwing, pushing, hugging and bench press)
33
Q

What is the action of the Subslavius?

A

anchors and depresses clavicle

34
Q

what is the action of the Levator scapulae?

A

elevate the scapula

35
Q

Trapezius lateral and medial attachment

A

Medial attachment: medial third of superior nuchal line; external occipital protuberance, nuchal ligament; spinous processes of C7-T12 vertebrae
Lateral attachment: lateral 1/3 of clavicle, acromion and spine of scapula
Innervation: spine accessory nerve (Cranial nerve XI) and C3, C4 spinal nerve

36
Q

Rhomboids (major and minor) attachments and innervation

A

medial attachment: spinous processes of C7 and T1 (minor); spinous processes of T2-T5 (major)

Lateral attachment: medial border of scapula

Innervation: dorsal scapuar nerve

37
Q

Axillary nerve injury is associated with

A

surgical neck fracture of humerus, shoulder dislocation, IM injection

can lead to atrophy of deltoid

38
Q

Supraspinatus

A
  • Proximal attachment: supraspinous fossa of scapula
  • Distal attachment: greater tubercle of humerus
  • Innervation: suprascapular nerve
39
Q

Supraspinatus action

A

initiate abduction (first 15 degrees of arm)

40
Q

Infraspinatus

A
  • Proximal attachment: infraspinous fossa of scapula
  • Distal attachment: greater tubercle of humerus
  • Innervation: suprascapular nerve (also supplies supraspinatus)
41
Q

Infraspinatus action

A

laterally rotates shoulder joint

42
Q

Teres minor main action

A

laterally rotates shoulder joint

43
Q

Teres minor attachments and innervation

A

proximal attachment: middle part of lateral border of scapula

Distal attachment: greater tubercle of humerus

Innervation: axillary nerve

44
Q

What is the action of Subscapularis?

A

medially rotate and adduct of shoulder joint

45
Q

Teres major attachment

A

Proximal attachment: inferior part of lateral border of scapula

Distal attachment: medial lip of intertubercular sulcus of humerus

Innervation: lower subscapular nerve

46
Q

Teres major action

A

medially rotates and adducts the shoulder joint

47
Q

Subscapularis attachment and innervation

A

proximal attachment: subscapular fossa of scapula

distal attachment: lesser tubercle of humerus

innervation: upper and lower subscapular nerves

48
Q

What 4 muscles make up the rotator cuff?

A

1) spuraspinatus
2) infraspinatus
3) Teres Minor
4) Subscapularis

49
Q

The Left Axillary artery turns into the Left brachial artery after what muscle?

A
  • Left Teres major
50
Q

What happens if the long thoracic nerve is injured?

A
  • winging of scapula due to paralysis of serratus anterior
51
Q
A

Summer 24 (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions