Which upper chamber of the heart contains oxygen-rich blood? a. the right atrium
b. the left atrium
c. the right ventricle
d. the left ventricle

Which of the following are the functions of the skeletal system? blood cell production in soft marrow tissues and mineral reserves largest organ of the body for defense and support vitamin d production and pumping blood through vessels voluntary movement and contractile movement

If a grape were placed in a hypertonic solution what would happen and why?

Which type of neuron stimulates muscles to contract?