Exam 3

Question 1

Biceps Brachii Muscle

Answer 1

O: Coracoid process and supraglenoid tubercle
I: Radial Tuberosity
A: Flexion and supination

Question 2

Brachialis Muscle

Answer 2

O: Anterior Humerus
I: Coronoid process of the ulna
A: Flexion

Question 3

Brachioradialis Muscle

Answer 3

O: Lateral Humerus
I: Styloid process of the radius
A: Flexion, pronation, and supination

Question 4

Triceps Brachii Muscle

Answer 4

O: Infraglenoid tubercle and posterior humerus
I: Olecranon process
A: Elbow Extension

Question 5

Pronator Teres Muscle

Answer 5

O: Medial Humerus and Ulna
I: Lateral Radius
A: Pronation

Question 6

Pronator Quadratus Muscle

Answer 6

O: Anterior Ulna
I: Anterior Radius
A: pronation

Question 7

Supinator Muscle

Answer 7

O: Ulna
I: Lateral Radius
A: Supination

Question 8

What kind of joint is the elbow?

Answer 8

ginglymus

Question 9

What are the 2 elbow joints?

Answer 9

1. Humeroulnar Joint (distal humerus and proximal ulna)
2. Radiohumeral Joint (distal humerus and proximal radius)

Question 10

As the elbow flexes 20 degrees or more, what happens?

Answer 10

its bony stability is unlocked allowing for more side-to-side laxity

Question 11

T/F: Collateral ligaments prevent/reduce frontal plane motion

Answer 11

True

Question 12

Elbow flexion

Answer 12

145 degrees

Question 13

Elbow extension

Answer 13

0 degrees

Question 14

Elbow hyper extends how many degrees?

Answer 14

10 degrees

Question 15

Radioulnar joint supination and pronation

Answer 15

70-90 degrees

Question 16

Carrying angle

Answer 16

when a person is in anatomical position, the normal carrying angle places stress on the medial side of the elbow

Question 17

Ginglymus joints

Answer 17

Sagittal plane; frontal axis

Question 18

Flexor Carpi Radialis Muscle

Answer 18

O: Medial epicondyle of humerus
I: 2nd and 3rd metacarpals
A: Flexion and abduction

Question 19

Flexor Carpi Ulnaris Muscle

Answer 19

O: Medial epicondyle
I: pisiform, hamate, and 5th metacarpal
A: Flexion and adduction

Question 20

Extensor Carpi Radialis Brevis Muscle

Answer 20

O: Lateral Epicondyle
I: Base of 3rd metacarpal
A: Extension and abduction

Question 21

Extensor Carpi Radialis Longus Muscle

Answer 21

O: lateral epicondyle
I: 2nd metacarpal
A: extension and abduction

Question 22

Flexor digitorum superficialize muscle

Answer 22

O: medial Epicondyle
I: middle phalanx
A: Finger flexion
(Neutralizer keeps wrist from flexion when flexing fingers)

Question 23

Flexor Digitorum profundus muscle

Answer 23

O: Meidal Ulna
I: Distal Phalanx
A: finger flexion

Question 24

Extensor Digitorum muscle

Answer 24

O: lateral epicondyle
I: middle and distal phalanx
A: finger extension

Question 25

Radioulanr Joint

Answer 25

Annular ligament helps keeps the head of the radius against the ulna (indirectly stabilizes the radiohumral joint)

Question 26

What kind of joint is the Radioulnar joint?

Answer 26

Trochoid joint; rotation = pronation & supination

Question 27

When CANT the radioulnar joint function?

Answer 27

When the elbow is extended; become internal and external rotation of the shoulder

Question 28

What holds the interosseous membrane hold together?

Answer 28

the radius and ulna

Question 29

Radial collateral ligament =

Answer 29

Lateral collateral ligament

Question 30

Ulnar collateral ligament =

Answer 30

Medial collateral ligament

Question 31

What muscle only affects the thumb

Answer 31

Pollicis muscle

Question 32

How many bones are there in the wrist and hand

Answer 32

29

Question 33

How many carpal bones are there

Answer 33

8 in 2 rows

Question 34

How many phalanxes are there

Answer 34

14

Question 35

What are the names of the phalanxes

Answer 35

distal, middle, and proximal

Question 36

What carpal bones are in the proximal row

Answer 36

Scaphoid, lunate, triquetrum, pisiform

Question 37

What carpal bones are in the distal row

Answer 37

Trapezium, trapezoid, capitate, hamate

Question 38

What proximal bone has very poor blood supply?

Answer 38

scaphoid bone

Question 39

Which proximal bone is most often dislocateed

Answer 39

Lunate bone

Question 40

What joint is only in the thumb and is a seller joint

Answer 40

carpometacarpal joint and there's only 2 in the body

Question 41

What is NOT located in the anatomical snuff box

Answer 41

seller joint

Question 42

What bones help form an important arch in the wrist?

Answer 42

The distal bones; T.T.C.H

Question 43

Where is the wrist joint in between?

Answer 43

the distal radius & ulna AND the proximal row of carpals

Question 44

Wrist flexion and extension

Answer 44

65-90 degrees

Question 45

Wrist adduction

Answer 45

25-40 degrees

Question 46

wrist abduction

Answer 46

15-25 degrees

Question 47

What are the names of the three finger joints

Answer 47

1. Metacarpophalangeal joints 2. Proximal interphalangeal joints 3. Distal Interphalangeal joints

Question 48

What type of joint are interphalangel joints

Answer 48

ginglymus joints which have carpometacarpal joints on both sides

Question 49

Most of the wrist flexors are held together by...

Answer 49

Retinaculum

Question 50

Thick pad of muscles under the thumb are called what

Answer 50

Thenar muscles; most are only pollicis muscles- thumb specific

Question 51

Muscles on the opposite side of the Thenar muscles are called what

Answer 51

Hypothenar muscles

Question 52

Where is the triangular fibrocartilage located

Answer 52

medial side of the ulna

Question 53

what does fibrocartilage do?

Answer 53

shock absorption and stability

Question 54

What is opposition?

Answer 54

movement of the thumb towards the other 4 digits

Question 55

What joint makes opposition possible

Answer 55

the sellar joint

Question 56

Where does the carpal tunnel meet

Answer 56

at the wrist flexors and median nerve

Question 57

Extensor Carpi Ulnaris Muscle

Answer 57

O: lateral epicondyle I: base of 5th metacarpal A: Extension & adduction