skeletal muscle movement

Question 1

what dictates the direction of movement

Answer 1

which side of the joint the muscle spans

Question 2

describe the relationship and movement between the bicep brachii and the shoulder joint

Answer 2

it spans the shoulder joint anteriorly and therefore flexes the joint

Question 3

describe the relationship and movement between the bicep brachii and the elbow joint

Answer 3

it spans the elbow joint anteriorly and therefore flexes the joint

Question 4

describe the relationship and movement between the proximal radioulnar joint and the bicep brachii

Answer 4

it spans the joint anteriorly and therefore produces supination of the forearm

Question 5

what determines the possible type of movement at a joint

Answer 5

the shape of the articular surface, eg if its a notch etc.

Question 6

what are the 3 different origins of the deltoid muscle

Answer 6

origin on spine of scapula
on acromion process of scapula
on lateral third of clavicle

Question 7

where is the insertion of the deltoid muscle

Answer 7

on the deltoid tuberosity of the humerus

Question 8

what movement do the posterior fibres of the deltoid allow

Answer 8

extension of the shoulder

Question 9

what movement do the middle fibres of the deltoid allow

Answer 9

abduction of the shoulder

Question 10

what movement do the anterior fibres of the deltoid allow for

Answer 10

flexion of the shoulder

Question 11

what is the function of clinical examinations of skeletal muscles

Answer 11

to test their ability to move and power of movement, test the muscle itself as well as its nerve supply

Question 12

how can clinical examinations of skeletal muscles be carried out

Answer 12

by asking patients to make movements or by testing reflexes