Lab 2

Question 1

what happens to the bones of the forearm during pronation and supination

Answer 1

the radius crosses over the ulna

Question 2

why do we have cartilaginous. joints at the ribs

Answer 2

to allow for movement while breathing but also protection of the heart and lungs

Question 3

on which aspect do the muscles that produce abduction cross the joint

Answer 3

laterally

Question 4

name the bones that the deltoid attaches to proximally, and describe the attachment locations on the bones:

Answer 4

the clavicle (lateral third)
the acromion process
the spine of the scapula

Question 5

name the bones that the deltoid attaches to distally, and describe the attachment locations on the bones:

Answer 5

the deltoid tuberosity of the humerus

Question 6

name the bones that the biceps brachii attaches to proximally, and describe the attachment locations on the bones:

Answer 6

supraglenoid tubercle
coracoid process

Question 7

name the bones that the biceps brachii attaches to distally, and describe the attachment locations on the bones:

Answer 7

radial tuberosity

Question 8

name the bones that the triceps brachii attaches to proximally, and describe the attachment locations on the bones:

Answer 8

infraglenoid tubercle
the humerus (radial groove) 2x

Question 9

name the bones that the triceps brachii attaches to distally, and describe the attachment locations on the bones:

Answer 9

posterior surface of the olecranon process