Human Anatomy and Physiology Practice Test 4

The sympathetic nervous system mediates:

Neuroglia are the supporting cells in the CNS.

Which of the following organs has the greatest blood flow per 100 g of tissue?

Which of the following is the principal buffer in interstitial fluid?

Intravenous lactic acid increases ventilation. The receptors responsible for this effect are located in the

_________ block nerve impulses by reducing membrane permeability to sodium ions.

The pressure differential between the heart and the aorta is least in the

A lack of or decrease in insulin hormone receptors on cells can result in:

Nerve impulses from visual stimuli are integrated in which lobe?

A baby boy is brought to the hospital because of convulsions. In the course of a workup, his body temperature and plasma glucose are found to be normal, but his cerebrospinal fluid glucose is 12 mg/dL (normal, 65 mg/dL). A possible explanation of his condition is

Monosaccharides are:

The nervous system deteriorates with age.

The dermis acts as a blood reservoir.

The spinal cord is continuous with which region of the brain?

Which of the following structures is not an accessory component of the skin?

The ____________ are the 'powerhouses' of the cell because they produce energy in the form of ATP.

A positively charged electrolyte is called:

The pancreas has both endocrine and exocrine functions.

Melatonin is secreted by:

The action potential is described as being: