Indicate the answer choice that best completes the statement or answers the question. 1. Unoxygenated blood from the head and neck region returns to the heart via the:

• pulmonary artery.

• veins.

• inferior vena cava.

• superior vena cava.

A patient states they have a common endocrine system disorder. Which of the following could they be referring to?

• hypothermia

• homeostasis

• hyperglycemia

• hemodialysis

The left ventricle of the heart has a thick muscular wall in order to:

• pump blood to the lungs.

• hold its electrical charge.

• pump blood throughout the body.

• pull blood from the lungs.

Which organelle controls the division of the cell?

• chromosomes

• nucleus

• lysosomes

• mitochondria

Which of the following is an enzyme that accelerates digestion?

• lysosome

• cytoplasm

• lactose

• bile

The function of the lymphatic system includes:

• protein and blood synthesis.

• filtering proteins.

• homeostasis and catabolism.

• lysosomal antibodies.

Physiology is described as which of the following?

• the study of anatomy

• the study of body positions

• the study of function

• the study of physics

Which body system facilitates blood production?

• endocrine

• skeletal

• integumentary

• lymphatic

Which refers to the location where the electrical impulse starts in the heart?

• sinoatrial node

• atrioventricular node

• bundle of His

• Purkinje fibers

Which of the following is a striated muscle?

• nervous muscle

• cardiac muscle

• smooth muscle

• skeletal muscle