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Upper Limb : Osteology > Structure Of Humerus > Flashcards

Structure Of Humerus Flashcards

1
Q

What is the name of the bone that is commonly referred to as the upper arm bone?

A

Humerus

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2
Q

True or False: The humerus is the longest bone in the human arm.

A

True

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3
Q

Fill in the blank: The humerus articulates with the _____ at the shoulder joint.

A

Scapula

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4
Q

What are the two main parts of the humerus?

A

The proximal and distal ends

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5
Q

Which end of the humerus is known as the proximal end?

A

The end closest to the shoulder

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6
Q

What is the name of the rounded head of the humerus that fits into the glenoid cavity?

A

Humeral head

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7
Q

What structure is located just below the head of the humerus?

A

Anatomical neck

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8
Q

True or False: The greater tubercle is located on the proximal end of the humerus.

A

True

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9
Q

What is the function of the lesser tubercle of the humerus?

A

Attachment for muscles

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10
Q

What is the name of the groove that runs between the greater and lesser tubercles?

A

Intertubercular sulcus

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11
Q

What is the name of the shaft of the humerus?

A

Diaphysis

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12
Q

What are the two prominent features found on the distal end of the humerus?

A

Medial and lateral epicondyles

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13
Q

Fill in the blank: The distal end of the humerus articulates with the _____ and _____ to form the elbow joint.

A

Radius and ulna

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14
Q

What is the name of the depression located on the anterior side of the distal humerus?

A

Coronoid fossa

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15
Q

True or False: The olecranon fossa is located on the anterior side of the humerus.

A

False

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16
Q

What is the role of the trochlea of the humerus?

A

Articulates with the ulna

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17
Q

What feature of the humerus is responsible for muscle attachments on the lateral side?

A

Lateral epicondyle

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18
Q

What is the primary function of the humerus?

A

To provide support and movement for the arm

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19
Q

Fill in the blank: The humerus is classified as a _____ bone.

A

Long

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20
Q

Which part of the humerus is most commonly fractured in falls?

A

Surgical neck

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21
Q

True or False: The humerus has a medullary cavity that contains bone marrow.

A

True

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22
Q

What type of bone tissue primarily makes up the humerus?

A

Cortical bone

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23
Q

What is the primary function of the deltoid tuberosity on the humerus?

A

Attachment for the deltoid muscle

24
Q

What anatomical feature of the humerus allows for the rotation of the arm?

A

Greater tubercle

25
Fill in the blank: The humerus develops from _____ ossification.
Endochondral
26
What is the average length of an adult humerus?
About 30 cm
27
What is the primary function of the scapula?
To provide attachment points for muscles and to contribute to shoulder joint movement.
28
True or False: The scapula is a flat, triangular bone.
True
29
Fill in the blank: The scapula articulates with the _____ at the glenoid cavity.
humerus
30
What are the three borders of the scapula called?
Superior, medial (vertebral), and lateral (axillary) borders.
31
Which part of the scapula is located at the lateral aspect and serves as the socket for the shoulder joint?
Glenoid cavity
32
What is the name of the prominent ridge on the posterior surface of the scapula?
Spine of the scapula
33
Which process of the scapula extends anteriorly and serves as an attachment for muscles?
Coracoid process
34
Multiple Choice: Which of the following is NOT a feature of the scapula? A) Acromion B) Coracoid Process C) Trochlea D) Glenoid Cavity
C) Trochlea
35
True or False: The scapula has a direct articulation with the ribs.
False
36
What are the two main surfaces of the scapula?
Costal (anterior) surface and dorsal (posterior) surface.
37
Fill in the blank: The _____ is the site of muscle attachment on the anterior surface of the scapula.
Subscapular fossa
38
What is the acromion?
A bony process on the scapula that forms the highest point of the shoulder.
39
Multiple Choice: Which muscles attach to the scapula? A) Deltoid B) Pectoralis Major C) Both A and B D) None of the above
C) Both A and B
40
What is the significance of the supraspinous fossa?
It serves as an attachment point for the supraspinatus muscle.
41
True or False: The scapula is part of the axial skeleton.
False
42
What does the term 'scapular winging' refer to?
A condition where the scapula protrudes away from the back due to muscle weakness or injury.
43
Fill in the blank: The _____ and _____ are the two fossae found on the posterior surface of the scapula.
Supraspinous fossa, Infraspinous fossa
44
What is the role of the infraspinous fossa?
It serves as an attachment point for the infraspinatus muscle.
45
Multiple Choice: Which ligament connects the acromion to the clavicle? A) Coracoacromial ligament B) Acromioclavicular ligament C) Glenohumeral ligament D) None of the above
B) Acromioclavicular ligament
46
What is the anatomical position of the scapula?
It is positioned posterolaterally on the thorax.
47
True or False: The scapula is symmetrical in shape.
False
48
What is the clinical relevance of the scapula?
It is crucial for shoulder mobility and stability, and injuries can affect arm function.
49
Fill in the blank: The _____ border of the scapula is closest to the spine.
Medial (vertebral)
50
Which muscle is primarily associated with the subscapular fossa?
Subscapularis muscle
51
What is the function of the coracoacromial arch?
It protects the shoulder joint and provides support.
52
Multiple Choice: What is the shape of the scapula? A) Square B) Circular C) Triangular D) Oval
C) Triangular
53
What structure lies above the scapula and is involved in shoulder movement?
Clavicle
54
True or False: The scapula can move independently of the rib cage.
True
55
Fill in the blank: The _____ is the lateral edge of the scapula that forms part of the shoulder joint.
Glenoid cavity
56
What is the importance of the scapular notch?
It allows the passage of the suprascapular nerve and artery.

Upper Limb : Osteology (4 decks)

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