Human Anatomy Vol 1

Carpal bones

"She Looks Too Pretty Try To Catch Her"

Lateralto medial, proximal row

Less frequently, there is a sesamoid bone on the

lateral side of the metacarpophalangeal joint of the

index finger.

Sometimes sesamoid bone may be found at other

metacarpophalangeal joints.

Mnemonics

Axillary radial and ulnar nerves are intimately

related to humerus and are liable to be injured.

Radial pulse is felt close to the lower end of shaft

of radius

Pisiform bone is a sesamoid bone in the tendon of

flexor carpi ulnaris muscle

First metacarpal is the shortest, and strongest of

metacarpals. It is situated at an angle to the other

bones, this permitting opposition of the thumb.

Third metacarpal is the longest and the axis of

abduction and adduction passes through its centre.

A S0-year-old man fell off his bicycle. He heard a

cracking noise and felt severe pain in his right

shoulder region. He noted that the lateral part of the

shoulder drooped and medial end of clivicle was

elevated.

. Which is the common site of fuacture of clavicle
and why?
. \A/hy did his shoulder droop down?
Ans: The clavicle gets fractured at the junction of
medial two-thirds and lateral one-third. This is the
weak point as it lies at the junction of two opposing
curvatures.
The shoulder drooped down, because of the
weight of the unsupported shoulder.

All the following muscles are flexors of the wnst excEt:

a. Flexor carpi radialis

b. Flexor digitorum superficialis

c. Pronator teres

d. Flexor carpi ulnaris

The axis of abduction/adduction of digits passes

through:

a. Centre of 2nd digit

b. Centre of 3rd digit

c. Centre of 4th digit

d. Centre of 5th digit

A11 are heads of triceps brachii except:

• Scaphoid


• Lunate


• Triquetral


• Pisiform
  Distal row


• Trapezium


• Trapezoid


• Capitate


• Hamate
  Elbow
  Which side has common flexor origin
  FM (as in FM Radio)
  Flexor medial, so common flexor origin is on the medial
  side.
  Bicipipl groove of humerus "Lady between 2 majors"
  Latelal lip-pectoral is major
  Medial lip-teres major
  F loor-latissimus dorsi

MULTIPLE CHOICE OUESTIONS

1. Which of the followingbones is the first one to start 4.
   ossification?
   a. Ulna
   c. Clavicle


2. Fracture of humerus at midshaft is likely to cause
   injury to which of the following nerves?
   a. Median nerve
   c. Ul:rar nerve

b. Scapula

d. Humerus

b. Radial nerve

d. Musculocutaneousnerve

5.

3. Attachments of biceps brachii are to all of the
   following except:
   a. Tip of coracoid process
   b. Supraglenoid tubercle
   c. Shaft of humerus
   d. Radial tuberosity

tt

E

=o

CL

CL

f

c

Fo

oo

a

6.

a. Longhead

c. Lateral head

b. Short head

d. Medial head

1.c 2.b J.L 4.c s.b 5.b

ARS