Lab Exercise 7: Arm, Wrist, and Hand

Question 1

radius and carpals, metacarpals, metacarpal phalanx and proximal phalanx are which type of synovial joint

Answer 1

condylar joint

Question 2

humerous, ulna, and joints between adjacent phalanges are which type of synovial joint

Answer 2

hinge joint

Question 3

proximal radius and ulna, distal radius and ulna are which type of synovial joint

Answer 3

pivot joint

Question 4

adjacent carpals are which type of synovial joint

Answer 4

plane joint

Question 5

trapezium and first metacarpal are which type of synovial joint

Answer 5

saddle joint

Question 6

The proximal ends of the radius and ulna form a type of synovial joint called a(n) ____ joint. The only type of movement possible at this joint is __

Answer 6

pivot, rotation

Question 7

The feature on the proximal end of the ulna that forms the “elbow” is the _______

Answer 7

olecranon process

Question 8

When naming the bones of the digits, a bone that articulates with a metacarpal is properly called a(n)_______

Answer 8

proximal phalanx

Question 9

When classifying bones based on shape, all the bones of the wrist as classified as _____ bones

Answer 9

short

Question 10

The muscle on the lateral side of the anterior portion of the forearm that acts to abduct the hand at the wrist is the ___

Answer 10

flexor carpi radialis

Question 11

The ________ process on the proximal end of the ulna fits into a cavity called the _________ on the anterior surface of the humerus.

Answer 11

coronoid, coronoid fossa

Question 12

The trapezium and first metacarpal form a type of synovial joint called a(n) ___________joint. Movement in all planes is possible at this joint but _________ is not possible.

Answer 12

saddle, rotation

Question 13

Thin projections at the distal ends of the radius (lateral surface) and ulna (medial surface) are called the________

Answer 13

styloid processes

Question 14

The muscle of the upper arm that acts to extend the arm at the elbow is the ____

Answer 14

triceps brachii

Question 15

The joint between the humerus and ulna is an example of a true _______ joint. When straightening this joint, the _______ of the ulna tucks into the
_________ of the humerus.

Answer 15

hinge, olecranon process, olecranon fossa

Question 16

The head of the radius is located on the ________ end of the bone, while the head of the ulna is located on the ___________ end of the bone.

Answer 16

proximal, distal

Question 17

Turning the palm of the hand up is called ____________ while turning the palm of the hand down is called ______________. These movements are made possible by the pivot joint formed between the _________ of the radius and the ______________ of the ulna.

Answer 17

supination, pronation, proximal(head), radial notch

Question 18

When classifying bones based on shape, all the bones of the arm as well as all the bones of the hand are classified as _________ bones.

Answer 18

long

Question 19

The muscle of the upper arm that flexes the arm at the elbow when the palm of the hand is pronated is the ____

Answer 19

brachialis

Question 20

The raised area just distal to the head of the radius is the ______

Answer 20

radial tuberosity

Question 21

Bending a joint is called ________ while straightening a joint is called
___________. Straightening a joint beyond its normal anatomical position is called_______

Answer 21

flexion, extension, hyperextension

Question 22

The muscle on the medial side of the anterior portion of the forearm that acts to adduct the hand at the wrist is the _______

Answer 22

flexor carpi ulnaris

Question 23

The joints between most carpals and metacarpals as well as the joints between all metacarpals and phalanges are a type of synovial joint called a ___________ joint.

Answer 23

condylar

Question 24

The muscle of the upper arm that flexes the arm at the elbow when the palm of the hand is supinated is the _______

Answer 24

biceps brachii

Question 25

Projections situated above the condyles on the humerus, called the medial and lateral ________, serve as attachment points for the flexor carpi and extensor carpi muscles.

Answer 25

epicondyles

Question 26

The muscle on the medial side of the posterior portion of the forearm that acts to adduct the hand at the wrist is the _________

Answer 26

extensor carpi ulnaris

Question 27

The joints between adjacent carpals are all _________ joints. Anatomically these are_________ joints so their degree of movement is classified as ________

Answer 27

plane, synovial, diarthrotic

Question 28

The muscle of the arm that inserts proximal to the styloid process of the radius and acts to flex the arm at the elbow is the ______

Answer 28

brachioradialis

Question 29

The muscle group on the lateral side of the posterior portion of the forearm acts to abduct the hand at the wrist is the _______ group

Answer 29

extensor carpi radialis