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BIO Anatomy and Physiology Lab > Laboratory 16: Pectoral Girdle. > Flashcards

Laboratory 16: Pectoral Girdle. Flashcards

1
Q

What does the pectoral girdle consist of?

A

Consists of an anterior clavicle and a posterior scapula on each side of the body.

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2
Q

What does the pectoral girdle represent?

A

An incomplete ring (girdle) of bones as the posterior scapulae do not meet each other but muscles extend from their medial borders to the vertebral column.

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3
Q

Do the clavicles meet?

A

No

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4
Q

What do the clavicles articulate with?

A

Manubrium of the sternum.

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5
Q

What does the pectoral girdle do?

A

Supports the upper limb and serves as the attachment point for various muscles that move the upper limb.

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6
Q

What does this allow for?

A

Considerable flexibility of the shoulder.

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7
Q

What does the relatively loose attachments of the pectoral girdle do?

A

They allow for a wide range of movements but shoulder joint injuries are somewhat common.

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8
Q

When is the clavicle easily broken?

A

The clavicle is a frequently broken bone when on reaches with an upper limb to break a fall.

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9
Q

What does each upper limb include?

A

A humerus, a radius, and an ulna. Eight carpals, five metacarpals, and fourteen phalanges in the hand.

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10
Q

Where is the humerus?

A

Upper arm.

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11
Q

Where is the ulna?

A

Forearm, closest to the body.

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12
Q

Where is the radius?

A

Forearm (farthest from the middle of the body)

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13
Q

What do the clavicle and the scapula provide?

A

Provide for attachment muscles of the neck and trunk.

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14
Q

Describe the clavicle

A

The clavicle is not a straight bone but rather has two curves making it slightly s-shaped and it serves as a bone to keep the upper limb to the side of the body.

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15
Q

Does the scapula connect directly to the axial skeleton?

A

No

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16
Q

What makes the humerus vulnerable?

A

The amount of flexibility of shoulder movements. This much flexibility makes the humerus vulnerable to dislocation from the scapula.

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17
Q

What is the sternal end of the clavicle?

A

Articulates with the manibrum of the sternum.

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18
Q

What is the acromial (lateral end) of the clavicle?

A

Articulates with the acromion of the scapula.

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19
Q

What is the acromoin scapula?

A

Lateral end of spine.

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20
Q

What is the glenoid cavity (Scapula)?

A

Shallow socket, aritculates with head of humerus.

21
Q

What is the coracoid process? (Scapula)

A

Beaklike projections

22
Q

Why is the humerus called the funny bone?

A

Because of a tingling sensation if it is bumped on the medial epicondyle where the ulnar nerve passes.

23
Q

What are the carpal bones?

A

Scaphoid, triquetrum, lunate, pisiform, hamate, trapezoid, capitate, trapezium.

24
Q

What carpal bones are included in the proximal row?

A

Scaphoid, lunate, triquetrum pisform.

25
Q

What does So Long Top Part Stand for?

A

The carpal bones in the proximal row.

Scaphoid, lunate, triquetrum, pisiform.

26
Q

What are the carpal bones in the distal row?

A

Hamate, trapezoid, capitate, trapezium.

27
Q

What does Here Comes The Thumb stand for?

A

The carpal bones located in the distal row. Hamate, Capitate, Trapezoid, Trapezium.

28
Q

What are the metacarpals?

A

Phalanges. Including proximal phalanx, middle phalanx, distal phalanx.

29
Q

What digit doesn’t have a middle phalanx?

A

First metacarpal (Digit)

30
Q

What does the head of the humerus do?

A

Articulates with glenoid cavity.

31
Q

Where is the greater tubercule on humerus?

A

On lateral side.

32
Q

Where is the lesser tubercule on humerus?

A

On anterior side.

33
Q

What is the anatomical neck (humerus)?

A

Tapered region near head.

34
Q

What is the surgical neck?

A

Common fracture site. Where the bone switchs from a ball to a shaft

35
Q

What is the intertubercular suculus?

A

Furrow for tendon of biceps muscle. Between the greater and lesser tubercule.

36
Q

What is the deltoid tuberosity? Humerus

A

Little bump in the middle of the bone towards the top.

37
Q

What is the capitulum? Humerus?

A

Lateral condyle (Rounded process) articulates with radius oppisote of the lesser tubercule.

38
Q

What is the trochlea humerus?

A

Medial condyle (Rounded process) articulates with ulna. Below the greater tubercule

39
Q

What is the medial epicondyle?

A

Superior to trochlea.

40
Q

What is the lateral epicondyle?

A

Superior to capitulum.

41
Q

What is the cornoid fossa?

A

Articulates with coronoid process of ulna. (On anterior side.)

42
Q

What is the olecranon fossa?

A

Articulates with olecranon process of ulna.

43
Q

What is the radius?

A

Lateral bone of the forarm.

44
Q

What is the head of the radius?

A

Allows rotation at elbow.

45
Q

What is the ulnar notch of the radius?

A

Articulation site with the ulna.

46
Q

What is the ulna?

A

Medial bone of forearm.

47
Q

Which is longer, ulna or radius?

A

ULNA

48
Q

What is the radial notch of ulna?

A

Articulation site with head of radius.

49
Q

Where is the head of ulna?

A

At distal ends.

BIO Anatomy and Physiology Lab (49 decks)

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