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Excretory System Nervous System Functioning Asexual/Sexual Reproduction Proteins Circulatory and Nervous System Fluid Therapy Food for Thought Medical Nursing Brain and Nervous System T Cells Lungs The Musculoskeletal and Integumentary Systems Cardiovascular Pathophysiology Vaccines Protein and Amino Acid Metabolism

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Nutrition - Digestive System › View

The food passes through the digestive system by

A. the action of villi

B. peristalsis

C. gulping

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Nervous & Endocrine Systems › View

Which statement best describes the chemical substances secreted by endocrine glands?

A. They are transmitted by neurons.

B. They are secreted into cells.

C. They are carried by the blood.

D. They are found only in vertebrates.

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