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Human Gross Anatomy > Upper limb > Flashcards

Upper limb Flashcards

1
Q

What muscles in the forearm are considered to be flexors?

A

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

Flexor digitorum superficialis

Flexor digitorum profundus

Flexor pollicis longus

Pronator quadratus

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2
Q

If the midshaft of the humerus is broken what artery can be severed?

A

Deep brachial artery or Profunda brachii artery

wraps posteriorly or behind the humerus once the axilllary artery splits into the deep and brachial artery (anterior)

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3
Q

Which two muscles allow for the flexion of the forearm?

A

Biceps Brachialis

Brachialis

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4
Q

The ulnar collateral arteries are located?

A

Anterior (Inferior) and Posterior (Superior) to the medial epicondyle of the humerus.

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5
Q

If the axillary nerve is severed what action cannot occur?

A

Abduction of the humerus as the deltoid and teres major are innervated by this nerve

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6
Q

The median nerve innervates every flexor muscles in the forearm except?

A

Flexor carpi ulnaris

Innervated by the ulnar nerve

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7
Q

What muscles make up the anterior compartment of the upper arm?

A

Brachialis (deep to the biceps brachi)

Biceps Brachi (long and short head)

Coracobrachialis

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8
Q

What is the superior boundary of the cubital fossa?

A

An imaginary line connecting the medial and lateral epicondyles of the humerus

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9
Q

What muscle flexes the Proximal interpharyngeal joint of 2-5?

A

Flexor digitorum superficialis

BYE BOY!!!

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10
Q

What are the three named branches of the brachial artery?

A

Deep artery of the arm

Superior ulnar collateral artery

Inferior ulnar collateral artery

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11
Q

If the humerus shatters distally what artery is damaged?

A

Brachial artery courses anteriorly

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12
Q

What muscle is involved in flexing the Distal interphalangeal joints of 2-5?

A

Flexor digitorum profundus

ONE PUNCHHHHHH

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13
Q

Name the three important structures in the cubital fossa

TAN

A

Biceps brachii Tendon

Brachial Artery

median Nerve

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14
Q

What is the main artery supplying the upper limb with blood?

A

Subclavian artery

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15
Q

If someone can no longer flex their forearm due to an injury which nerve was damaged?

A

Musclocutaneous nerve

Innervates the Biceps brachialis and the brachialis which flex the elbow

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16
Q

What are the three origins of the triceps brachii?

A

Long head (infraglenoid tubercle of the scapula)

Medial head (posterior surface of the humerus)

Lateral head (Posterior surface of humerus)

17
Q

What is the floor of the cubital fossa?

A

Brachialis and the Supinator muscles (deep to Brachioradialis)

18
Q

What nerve innervates the triceps?

A

Radial nerve

19
Q

What are the distal attachments for the triceps brachii?

A

Olecranon process of the ulna

20
Q

What muscles in the forearm pronates the forearm?

A

Pronator teres

Pronator quadratus

21
Q

What muscle is involved in flexing the interphalangeal joint of the thumb?

A

Flexor pollicis longus

22
Q

What are the major named arteries found in the upper limb?

A

Subclavian (
Axillary (shoulder an

Brachial (begins at the inferior border of the teres major and ends at the level of the elbow by branching into the ulnar and radial artery)

Ulnar and Radial arteries

23
Q

What are the superficial flexor muscles of the forearm?

A

Pronator teres

Flexor carpi radialis

Palmaris longus

Flexor carpi ulnaris

24
Q

If the surgical neck of the humerus is severed what artery is most likely to be cut?

A

Posterior humeral circumflex artery

25
Q

The superior ulnar collateral artery courses distally with what nerve?

A

ulnar nerve

26
Q

What does the median nerve which passes through the cubital fossa innervate?

A

Muscles in the forearm that allow

wrist flexion

Some muscles of the hand especially the thumb

27
Q

What muscles in the flexor forearm muscles are innervated by the anterior interosseous branch of median nerve?

A

Flexor pollicis longus

Pronator quadratus

28
Q

What muscles bound the cubital fossa?

A

Brachioradialis muscles (laterally)

Pronator teres muscle (medially)

29
Q

What nerve innervates the muscles of the hand primarily?

A

Ulnar nerves

30
Q

What muscle makes up the posterior compartment of the upper arm?

A

Triceps brachii

31
Q

Where are the deep artery of the arm and radial nerve located?

A

Radial groove of the humerus

Between the superior attachments of the medial and lateral heads of the triceps brachii muscle

32
Q

What is a high bifurcation ?

A

The brachial artery splits in the arm rather than in the cubital fossa

Ulnar artery may course superficial to the superficial layer of flexor muscles and be mistaken for a vein.

Drugs injected into the artery instead of the vein can have CATASTROPHIC CONSEQUENCES

33
Q

When you get to the deep muscles in the forearm which nerve is present?

A

Anterior interosseous branch of median nerve

34
Q

Why is the brachioradialis considered to be a posterior compartment muscle when it flexes the forearm?

A

It is innervated by the radial nerve and originates at the lateral supracondylar ridge of the humerus attaching to the radius distal end.

35
Q

Radial nerve and its branches

A

Radial nerve comes off of the posterior nerve

Branches at the elbow into DEEP and SUPERFICIAL branches

36
Q

What is the route of the superficial branch of radial nerve?

A

The radial nerve travels between the brachialis and the brachioradialis and the superficial branch travels under the brachioradialis all the way to the wrist and dorsum of the hand

37
Q

What is the route of the deep nerve of radial nerve?

A

At the elbow, the radial nerve will split into Superficial and deep branches. The deep branch will enter the extensor compartment through the two heads of the supinator muscle and innervates the superficial and deep extensor muscles

38
Q

Which extensor muscles help with abduction?

A

Extensor carpi radialis longus and brevis

39
Q

Which muscle extends all of the fingers of the hand? Innervation?

A

Extensor digitorum and Extensor digiti minimi

Posterior Interosseous nerve

Human Gross Anatomy (11 decks)

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