Which of the following is the correct order of events that leads to muscle contraction?

When there are two sets of capillaries connected by a vein as blood flows back toward the heart, this is a(n)

Photoreceptors are located in the _______ of the eye.

The type of capillary that is most permeable and found in the liver, spleen and bone marrow are _______ capillaries.

The type II cells of the alveoli 

Which division of the nervous system is responsible for the contraction of urinary bladder smooth muscle and relaxation of the internal urethral sphincter muscle?

The sagittal suture is a type of ______ joint.

The outer layer of a synovial joint capsule is composed of 

The muscle attachment to a bone that is called the origin is

The respiratory membrane consists of