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BMS 228 - Introduction to human anatomy > The Arm > Flashcards

The Arm Flashcards

1
Q

What does the capitulum articulate with?

A

The head of the radius

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2
Q

What does the trochlear articulate with?

A

The trochlear notch of the ulna

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3
Q

What does the annular ligament do?

A

Holds the head of the radius in place next to the ulna

Wraps around the radius at the neck portion - allowing the radius to wrap around the ulna during supination and pronation

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4
Q

How does the radius articulate with the ulna?

A

Proximally - Radial notch on the ulna

Distally - Ulna notch on the radius

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5
Q

What is the blood supply in through the upper limb?

A

Subclavian artery

Axillary artery

Brachial artery

Ulna and radial artery
(interosseous from the ulna artery)

Deep palmar arch - from radius

Superficial palmar arch - from ulna
(Common digital arteries from the superficial palmar arch)

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6
Q

At what point does the subclavian artery become the axially artery?

A

At the LATERAL border of the FIRST RIB

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7
Q

At what point does the axillary artery become the brachial artery?

A

At the inferior border of the teres MAJOR

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8
Q

When does the brachial artery split into the ulna and radial arteries?

A

In the cubital fossa

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9
Q

Where does the subclavian artery branch from?

A

Direct branch from aorta on the left

From the brachiocephalic trunk on the right

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10
Q

What nerve roots form the brachial plexus?

A

C5-T1

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11
Q

What are the terminal branches of the brachial plexus?

A

1) Axillary
2) Muscolocutaneous
3) Radial
4) Median
5) Ulna

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12
Q

What do all the muscles on the front of the arm and forearm do?

A

Flex

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13
Q

What do all the muscles on the back of the arm and forearm do?

A

Extend

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14
Q

What muscles does the musculocutaneous nerve innervate?

A

All the anterior muscles of the ARM:

  • Biceps Brachii
  • Corocobrachiallis
  • Brachialis
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15
Q

What are ALL of the posterior muscles of the arm innervated by?

A

The radial nerve

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16
Q

What is the long head of the triceps brachii SOMETIMES innervated by?

A

The axially nerve

17
Q

What is the ‘danger zone’?

A

The medial side of the biceps - where the important nerves and arteries run

18
Q

What action are the biceps good and not good for?

A

Good for supranation, not so good for flexing

19
Q

What is the strongest flexor of the arm?

A

Brachialis

20
Q

Which muscles of the anterior forearm are supeficial and which are deep?

A 
Superficial:
Biceps Brachii (2 heads)

Deep:
Corocobrachiallis
Brachiallis

21
Q

What is the cubital fossa?

A

A triangular region of the elbow which marks the transition between the arm and the forarm

22
Q

What run deeper, arteries or veins?

A

Arteries

23
Q

What is the superior border of the cubital fossa?

A

Imaginary line between the medial and lateral epicondyles

24
Q

What is the lateral border of the cubital fossa?

A

Medial border of the brachioradialis

25
Q

What is the medial border of the cubital fossa?

A

Lateral border of the pronator teres

26
Q

What is contained in the cubital fossa?

A 
Biceps Tendon
Brachial Artery (medially to BT)
Median Nerve
27
Q

When does the radial nerve transition into deep and and superficial branches?

A

As is passes beneath the brachioradialis (in the vicinity of the cubital fossa)

28
Q

What is the floor of the cubital fossa?

A

Brachioradialis

29
Q

What is venipuncture and what is the common site for this?

A

Puncture of a vein for a medical procedure (eg. take blood sample or for intravenous injection)

Common site is the median cubital vein in the roof of the cubital fossa

30
Q

What is the roof of the cubital fossa?

A

Skin, fascia, bicipital aponuerous, median cubital vein

31
Q

What is the brachial artery in the cubital fossa used for?

A

To listen to the korotokoff sounds during blood pressure

BMS 228 - Introduction to human anatomy (13 decks)

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