Which type of blood vessel has valves to prevent backflow of blood?

A. Artery
B. Capillary
C. Vein
D. All blood vessels have valves to prevent backflow of blood.


Answer: C

Anatomy & Physiology

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The spinal cord begins at the ________ and ends at the ________.

A. foramen magnum; first lumbar vertebrae B. fifth cervical vertebrae; coccyx C. foramen magnum; sacrum D. second cervical vertebrae; first lumbar vertebrae

Anatomy & Physiology

Twenty-five percent of the cardiac output goes to the kidneys because of their tremendous nutrient requirement for the active transport of Na+

Indicate whether the statement is true or false

Anatomy & Physiology

All of the following cells are considered "footloose," as they lack cellular junctions, EXCEPT __________.

A)phagocytic cells B)blood cells C)sperm cells D)epithelial cells

Anatomy & Physiology

In hearing, which structure is vibrated last?

A. The tympanic membrane B. The stapes C. The basilar membrane D. The perilymph inside the scalae

Anatomy & Physiology