What is the major function of the spinal cord?
a. it provides structural support for the trunk of the body.
b. it serve as a major conduit for information flowing to and from the brain.
c. it sends sensory information from the brain to the peripheral nervous system.
d. it serves as a centralized muscle mass that coordinates intricate muscle movements?

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.