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-MSK Upper Limb Anatomy > 2.1.1. The Humerus > Flashcards

2.1.1. The Humerus Flashcards

1
Q

What does the Proximal part of the Humerus articulate with?

A

The Glenoid Fossa of the Scapula

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2
Q

What are the 6 important Proximal Features of the Humerus?

A
  1. The Head of the Humerus
  2. The Anatomical Neck of the Humerus
  3. The Surgical Neck of the Humerus
  4. The Greater Tubercle of the Humerus
  5. The Lesser Tubercle of the Humerus
  6. The Intertubercular Sulcus
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3
Q

What connects the Head to the Greater and Lesser Tubercles of the Humerus?

A

The Anatomical Neck

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4
Q

Where is the Greater Tubercle located on the Humerus?

A

Laterally

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5
Q
  1. How many Faces does the Greater Tubercle of the Humerus have?
  2. What are they?
A
  1. 2
  2. a) Anterior Face
  3. b) Posterior Face
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6
Q

What is the function of the Greater Tubercle of the Humerus?

A

It serves as an Attachment Site for 3 of the Rotator Cuff Muscles:

  1. Supraspinatus
  2. Infraspinatus
  3. Teres Minor
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7
Q

Where is the Lesser Tubercle located on the Humerus?

A

Medially to the Greater Tubercle of the Humerus

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8
Q
  1. How many Face does the Lesser Tubercle of the Humerus have?
  2. What are they?
A
  1. 1

2. An Anterior Face

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9
Q

What is the function of the Lesser Tubercle of the Humerus?

A

It serves as an Attachment Site for a Rotator Cuff Muscle:

Subscapularis

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10
Q

What separates the Greater and Lesser Tubercles of the Humerus?

A

The Intertubercular Sulcus (Groove)

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11
Q

What runs along the Intertubercular Sulcus?

A

The Long Head of the Biceps Brachii

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12
Q

What are the Edges of the Intertubercular Sulcus known as?

A

Lips

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13
Q

What attaches to the Lips of the Intertubercular Sulcus?

A
  1. Tendon of the Pectoralis Major
  2. Tendon of the Teres Major
  3. Tendon of the Latissimus Dorsi
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14
Q

What runs between the Greater and Lesser Tubercles, and the Shaft of the Humerus?

A

The Surgical Neck of the Humerus

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15
Q
  1. What important Bony Landmarks are found on the Shaft of the Humerus?
  2. What do these serve as?
A
  1. a) Deltoid tuberosity
  2. b) Radial Groove
  3. Attachment sites for Various Muscles
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16
Q

Where is the Deltoid Tuberosity located?

A

On the Lateral Surface of the Humeral Shaft

17
Q

How is the Delotid Tuberosity described?

A

A Roughened Surface on the Lateral Humeral Shaft

18
Q

What attaches to the Deltoid Tuberosity?

A

The Deltoid Muscle

19
Q

What is the Radial Groove?

A

A Shallow Depression

20
Q

Where is the Radial Groove located?

A

It Runs Diagonally down the Posterior Surface of the Humerus

21
Q

How does the Radial Groove run, in relation to the Deltoid Tuberosity?

A

Parallel to it

22
Q

What lies in the Radial Groove?

A
  1. Radial Nerve

2. Profunda Brachii Artery

23
Q

What Muscles attach to the Humeral Shaft Anteriorly?

A
  1. Coracobrachialis
  2. Deltoid
  3. Brachialis
  4. Brachioradialis
24
Q

What Muscles attach to the Humeral Shaft Posteriorly?

A
  1. Medial Head of the Triceps

2. Lateral Head of the Triceps

25
Q

What is formed Distally, from the:

  1. Lateral Border of the Humerus?
  2. Medial Border of the Humerus?
A
  1. Lateral Supraepicondylar Ridge

2. Medial Supraepicondylar Ridge

26
Q

How is the Lateral Supraepicondylar Ridge described?

A

More Roughened than the Medial Supraepicondylar Ridge

27
Q

What is the function of the Lateral Supraepicondylar Ridge?

A

It is the Attachment Site for many Extensor Muscles in the Posterior Forearm

28
Q

What is immediately Distal to the

  1. Lateral Supraepicondylar Ridge?
  2. Medial Supraepicondylar Ridge?
A
  1. Lateral Epicondyle

2. Medial Epicondyle

29
Q

How are the Lateral / Medial Epicondyles described?

A

Projections of the Bone

30
Q
  1. Can the Lateral / Medial Epicondyles be Palpated?
  2. Is one more Palpable?
  3. Why?
A
  1. Yes
  2. The Medial Epicondyle
  3. It is Larger
31
Q

What can be Palpated along the Posterior Side of the Medial Epicondyle?

A

Ulnar Nerve as it enters into the Forearm

32
Q

What is located Distally and immediately Lateral to the Medial Epicondyle?

A

The Trochlea

33
Q

Where does the Trochlea extend to?

A

The Posterior of the Bone

34
Q

What is located Laterally to the Trochlea, but Medially and Distal to the Lateral Epicondyle?

A

The Capitulum

35
Q

What are the names of the 3 Depressions found on the Distal end of the Humerus?

A
  1. Coronoid Fossa
  2. Radial Fossa
  3. Olecranon Fossa
36
Q

What articulates with the Ulnar at the Elbow Joint?

A

The Trochlea

37
Q

What articulates with the Radius at the Elbow Joint?

A

The Capitulum

38
Q

What shape does the bone form at the Elbow Joint?

A

A Flattened, 2D like, Shape

-MSK Upper Limb Anatomy (48 decks)

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