Upper Limbs General

Question 1

How many bones consist in the hand and wrist combined?

Answer 1

27

Question 2

What are the phalanges? How many bones?

Answer 2

(fingers and thumb)
14 bones

Question 3

What are the metacarpals? How many bones?

Answer 3

(palm)
5 bones

Question 4

What are the carpals? How many bones?

Answer 4

(Wrist)
8 bones

Question 5

Fingers and thumbs are called?

Answer 5

Digits
Each digit consists of small bones called phalanges

Question 6

What are the 3 parts of the phalanges called?

Answer 6

Proximal (bottom of finger, closest to palm)
Middle (middle of finger duh)
Distal (tip of finger)

Question 7

Where is the first metacarpal located? Where is the last one located?

Answer 7

First: Thumb
Last (fifth): Pinky
Metacarpals
1-5 metacarpals

Question 8

What are the 3 parts of the metacarpal called?

Answer 8

Base (closest to the wrist)
Body (middle portion)
Head (the top, closest to the phalanges aka fingers)

Question 9

How many phalanges does the thumb have? What is this joint called ?

Answer 9

2 phalanges
Interphalangeal (IP) joint

Question 10

Joint name between the first metacarpal and the proximal phalanx of the thumb

Answer 10

First metacarpophalangeal (MCP) joint
(Name derives from the two bones that make up this joint)

Question 11

Name of joint between distal and middle portion of the digit?

Answer 11

Distal interphalangeal (DIP) joint

Question 12

Name of joint between middle and proximal portion of the digit?

Answer 12

Proximal interphalangeal (PIP) joint

Question 13

Name of joint between proximal and wrist?

Answer 13

metacarpophalangeal (MCP) joint

Question 14

The wrist is broken up into two rows:

Answer 14

Distal row (closest to fingers)
Proximal row (closest to forearm)

Question 15

How many carpals consist in each row?

Answer 15

Distal: 4
Proximal: 4

Question 16

What are the 4 carpals in the distal row of the wrist?

Answer 16

1 trapezium
2 trapezoid
3 capitate
4 Hamate

Question 17

What are the 4 parts of the proximal row?

Answer 17

1 scaphoid
2 Lunate
3 Triquetrum
4 Pisiform

Question 18

What is the Lateral side of the hand?
What is the medial side?

Answer 18

Lateral side = thumb (1st)
Medial side = Pinky (5th)

Question 19

What is the first carpal in the proximal row?
what is its shape?

Answer 19

scaphoid bone
boat shaped
largest bone in proximal row
articulates with the radius proximally

Question 20

What is the second carpal in the proximal row? What is its shape?

Answer 20

Lunate (moon shaped)
articulates with the radius

Question 21

What is the third carpal in the proximal row? What is its shape?

Answer 21

Triquetrum (tri-kwe-trum)
three articular surfaces
distinguished by its pyramid shape

Question 22

What is the fourth carpal in the proximal row? What is its shape?

Answer 22

pisiform
pea shaped
smallest of the carpal bones
anterior to the triquetrum
most evident in the carpal canal/ tangential projection

Question 23

Distal row articulates with…

Answer 23

the five metacarpals (fingers)

Question 24

First carpal (lateral) in the distal row?

Answer 24

trapezium
four-sided, irregularly shaped
located medial and distal to the scaphoid and proximal to the first metacarpal (finger)

Question 25

Second carpal in the distal row?

Answer 25

trapezoid
four-sided
smallest bone in the distal row

Question 26

Third carpal in the distal row?

Answer 26

Capitate
largest in distal row

Question 27

Fourth (last) carpal in the distal row?

Answer 27

Hamate
distinguished by its hook-like process called hamulus

Question 28

Where is the radius located?

Answer 28

apart of the forearm
lateral (thumb) side

Question 29

Where is the Ulnar located?

Answer 29

part of the forearm, medial side

Question 30

What is styloid processes?

Answer 30

small conical projections
located at extreme distal ends of both radius and ulna

Question 31

What do the ulna and radius articulate with?
(what joint)

Answer 31

articulate with each other at the proximal radioulnar joint and the distal radioulnar joint
(joints allow for rotational movement of wrist and hand)

Question 32

Joint responsible for rotational movement of wrist and hand?

Answer 32

proximal radioulnar joint & distal radioulnar joint

Question 33

what is the ulnar notch?

Answer 33

small depression on the medial aspect of the distal radius
the head of ulna fits into the ulnar notch to form the distal radioulnar joint.

Question 34

head of ulna

Answer 34

located near the wrist (distal end)
when hand is pronated, head of ulna and styloid process are easily felt/seen

Question 35

head of the radius

Answer 35

located near the elbow (proximal end)

Question 36

long midportion of both the radius and the ulna are called…

Answer 36

the body (shaft)

Question 37

(t/f) the radius is the shorter bone (of the two) that is directly involved with the wrist joint

Answer 37

true
(during pronation the radius rotates around the more stationary… ulna)

Question 38

radial tuberosity

Answer 38

rough oval process on the medial and anterior side of the radius, distal to the neck

Question 39

ulna is the ___ bone
Radius is the _____ bone

Answer 39

longer, stationary (ulna)
Shorter, rotates (radius)

Question 40

what is primarily responsible for the formation of the elbow joint?

Answer 40

Ulna

Question 41

olecranon/coronoid processes

Answer 41

beak-like process of the proximal ulna
olecranon can be easily palpated on the posterior aspect

Question 42

coronoid tubercle

Answer 42

medial margin of the coronoid process that is lateral to the radial notch of the

Question 43

trochlear

Answer 43

large concave depression that articulates with distal humerus

Question 44

radial notch

Answer 44

small/shallow depression on the lateral aspect of the proximal ulna

Question 45

humeral condyle

Answer 45

expanded distal end of the humerus