Kinesiology Week 7 Flashcards
How many muscles are in the hand?
a. 19
b. 29
c. 9
b. 29 muscles
How many bones are in the hand?
a. 19
b. 29
c. 9
a. 19 bones
A ______ is a pictorial representation of the anatomical divisions of the primary motor cortex and the primary somatosensory cortex
a.
b.
c. cortical homunculus
c. cortical homunculus
The cortical homunculus shows the portion of the human brain directly responsible for the movement and exchange of sense and _____ information of the rest of the body
a.
b. motor
c.
b. motor
The carpus has ____ carpal bones
a. 5
b. 6
c. 7
d. 8
d. 8
The hand has ____ metacarpals
a. 5
b. 6
c. 7
d. 8
a. 5
What are the five digits of the hand?
Thumb, index, middle, ring, and small (little) fingers
A ____ is one metacarpal bone and its phalanges
a. doe
b. ray
c. me
d. fa
b. ray
The articulation between the proximal end of the metacarpal and the distal row or carpals are the _____ joints
a. carpometacarpal joints (CMC)
b. metacarpophalangeal joints (MCP)
a. CMC
The articulation between the metacarpals and the proximal phalanges form the _____ joints
a. carpometacarpal joints (CMC)
b. metacarpophalangeal joints (MCP)
b. MCP
Each finger has two interphalangeal joints, the _____ interphalangeal and the ______ interphalangeal
a. proximal and distal
b. anterior and posterior
c. superior and inferior
a. proximal and distal (PIP) and (DIP)
The thumb has only two phalanges and therefore only ___ interphalangeal (IP) joint(s)
a. 1
b. 2
c. none
a. 1
True or False: The palmer wrinkles are the dermal hinges where the skin folds on itself during movement
False: it is called the palmer creases
True or False: Palmer creases increase skin adherence for enhancing grasp
True
True of False: the golden arches are important to hand function as they can hold and manipulate objects
True
The _______ is formed by distal row of carpal bones, forms the carpal tunnel
a. proximal transverse arch
b. distal transverse arch
c. longitudinal arch
a. proximal transverse arch
The _______ passes through the MCP joints
a. proximal transverse arch
b. distal transverse arch
c. longitudinal arch
b. distal transverse arch
The _______ follows the general shape of the second and third rays
a. proximal transverse arch
b. distal transverse arch
c. longitudinal arch
c. longitudinal arch
True or False: When fabricating wrist splints, both the palmer arches and the distal palmer crease must be considered so the splint will fit well
True
What is the name of the CMC joint of the thumb?
Trapeziometacarpal
True or False: The trapeziometacarpal is a saddle shaped biaxial joint
True
True of False: The Trapeziometacarpal is able to move in two planes and two axes
False; 3 planes and 3 axes
The trapeziometacarpal is a ________ on ________
a. concave on convex
b. convex on concave
a. concave on convex
How many degrees of freedom are there in the trapeziometacarpal?
2 degrees of freedom (abduction, adduction, flexion, extension)
The metacarpophalangeal joint of the thumb (MP Joint) acts like a _____ joint
a. saddle
b. hinge
c. ball and socket
b. hinge
The metacarpophalangeal joint of the thumb (MP Joint) is a ______ joint
a.
b.
c. condyloid
c. condyloid
True or False: Motion at the thumb MP is more restricted than at the other MCP joints
True, this is due to the ulnar and radial collateral ligaments which restrict abduction and adduction
What is gamekeepers thumb?
when the ulnar collateral ligament is torn (usually skiing injury)
The second metacarpal is _____ to allow for two-point punch with the opposing thumb
a. supinated
b. pronated
a. supinated
True or False: When flexed, the fourth and fifth metacarpal joints rotate and cup around objects
True
Flexion is greater on the _______ aspect of the hand
a. radial
b. ulnar
b. ulnar
NEED SLIDE 32, 33, 34, 35
What is rheumatoid arthritis?
swelling and inflammation in the MCP joints
What happens with the collateral ligaments if they are stressed during rheumatoid arthritis?
the ligaments will stretch and force will move in an ulnar direction, this results in permanent joint change, ulnar deviation.
When joints are edematous, patients are encouraged not to do…
a. tasks that require tight fisting
b. activities that facilitate ulnar deviation
c. all of the above
c. all of the above
slide 39, 40
Which of the following contribute to stability of the hand
a. transverse carpal ligament
b. fibrous palmar aponeurosis (palmer fascia)
c. collateral ligaments of the joints
d. extensor retinaculum
e. all of the above
f. both A and B
e. all of the above
What is the fibrous palmar aponeurosis (palmer fascia) a continuation of?
the flexor retinaculum
What is palmar aponeurosis?
a triangular condensation of deep fascia that covers the palm and is anchored to the skin in distal regions
What is the palmar aponeurosis anchored to?
the flexor retinaculum
What is the palmar aponeurosis continuous with?
the palmaris longus tendon
What is dupuytrens disease?
when fibroblastic cells invade the palmer fascia
What are the intrinsic muscles of the hand; what are their function? slide 47-63
- Muscles of the Thenar Eminence
Abductor pollicis brevis
Flexor pollicis brevis
Opponens pollicis
Adductor pollicis - Muscles of the hypothenar eminence
Flexor digiti minimi
Abductor digiti mini
Opponens digiti minimi
Palmaris brevis - Abductor pollicis
- Lumbricals and Interossei
Extrinsic flexors of the hand and function slide 66-69
Flexor digitorum superficialis
Flexor digitorum profundus
Flexor pollicus longus
Extrinsic extensors of the fingers and function slide 71-80
Extensor digitorum
Extensor indicis
Extensor digiti minimi
Extensors of the thumb
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus
