The cell's endomembrane system is most like which system of the human body?

a. digestive

b. integumentary

c. musculoskeletal

d. circulatory

2. which one of these is not an example of intercellular communication?

a. hypothalamus signals pituitary gland

b. ribosomes make protein

c. endocrine cells send hormones into blood

d. bacteria share information about nutrients

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.