Anatomy and Physiology of Bones

Which category of bones (long, short, flat, irregular) has the least amount of spongy bone relative to its total volume? What type of bone is the phalanx classified as? What two types of bone are the major submembranous site of osteoclasts? What type of bone is the major submembranous site of osteoblasts? What is the function of the organic matrix in bone? What are the important organic bone components? What is the function of the calcium salts in bone?

Muscle contraction

Describe in detail a muscle contraction and relaxation from the point of the nervous stimuli. Describe all cellular structures and physiological events that occur at the cellular and tissue level that are directly involved with the muscle contraction (receptors, etc.) I am referring to skeletal muscle (like contraction of a bicep).

Description of reflexive memory

Describe reflexive memory.

Sequence of events in contraction of skeletal muscle.

List the steps in skeletal muscle contraction.

Twitch contraction

Hi-Please explain what the refractory period is and when it happens-before or after relaxation? Thanks.