Muscles Of Th Arm

Question 1

Is the biceps attached to the arm in any way

Answer 1

No

Question 2

When the elbow is flexed at an angle approaching 90 degrees and the forearm is supinated, what action does the biceps brachii undergo

Answer 2

It acts as a flexor

Question 3

When the elbow is flexed at an angle approaching 90 degrees and the forearm is pronated, what action does the biceps brachii undergo

Answer 3

Supination

Question 4

The most powerful supinator of the forearm is

Answer 4

Biceps brachii

Question 5

Origin of long head of biceps brachii

Answer 5

Supraglenoid tubercule

Question 6

Origin of short head of biceps brachii

Answer 6

Coracoid process

Question 7

Insertion of biceps brachii

Answer 7

Radial tuberosity and fascia of Forearm via the bicipital aponeurosis

Question 8

What is the transverse humeral ligament

Answer 8

It is a broad which passes from the lesser to greater tubercles of the humerus . It holds the tendon of the long head of biceps in the bicipital groove

Question 9

What is the bicipital aponeurosis

Answer 9

It is a triangular membranous band that runs from the biceps tendon, across the Cubital fossa and merges with the antebrachial fascia of covering the flexor muscles on the medial side of the arm

Question 10

Function of bicipital aponeurosis

Answer 10

It affords protection for the brachial artery and median nerve and to lessen pressure of the biceps on the radial tuberosity during supination and pronation of the forearm

Question 11

The main flexor of the forearm is

Answer 11

Brachialis

Question 12

Origin of brachialis

Answer 12

Medial and lateral surfaces of the humeral shaft

Question 13

Insertion of brachialis

Answer 13

Ulnar tuberosity

Question 14

The distal attachement of the Coracobrachialis indicates the location of the

Answer 14

Nutrient foramen of the humerus

Question 15

Origin of the Coracobrachialis

Answer 15

Coracoid process of the scapula

Question 16

Insertion of the Coracobrachialis

Answer 16

Medial side of the humeral shaft at the level of the deltoid tubercule

Question 17

Origin of long head of triceps

Answer 17

Infraglenoid tubercule of scapula

Question 18

The least active head of the triceps is

Answer 18

The long head

Question 19

The most active head of the triceps is

Answer 19

The middle head

Question 20

Arterial supply to the posterior compartment of arm is by

Answer 20

Profunda brachii artery

Question 21

Origin of medial head of triceps

Answer 21

Humerus, inferior to the radial groove

Question 22

Origin of lateral head of triceps

Answer 22

Humerus, above the radial groove

Question 23

Between the triceps tendon and olecranon is

Answer 23

Subtendinous olecranon bursa

Question 24

Insertion of triceps

Answer 24

Olecranon of the ulna

Question 25

A tap on the triceps tendon tests

Answer 25

Spinal segment C7

Question 26

Origin of anconeus

Answer 26

Lateral epicondyle of humerus

Question 27

Insertion of anconeus

Answer 27

Lateral surface of olecranon and superior part of posterior surface of ulna