Essentials Of Human Anatomy & Physiology Quiz

The main functions of the skeletal system include providing support and structure to the body, protecting internal organs, enabling movement by serving as attachment points for muscles, storing minerals such as calcium and phosphorus, and producing blood cells in the bone marrow.

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The primary function of the respiratory system is to facilitate the exchange of gases, primarily oxygen and carbon dioxide, between the air and the blood. This process occurs in the alveoli of the lungs.

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Hemoglobin is a protein found in red blood cells that binds to oxygen in the lungs and carries it to tissues throughout the body. It also helps transport carbon dioxide, a waste product of metabolism, from the tissues back to the lungs for exhalation.

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Neurons are specialized cells in the nervous system that transmit electrical and chemical signals. They are responsible for receiving sensory input, processing information, and sending commands to muscles and glands.

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The axial skeleton consists of the bones along the central axis of the body, including the skull, vertebral column, and rib cage. The appendicular skeleton includes the bones of the limbs and girdles (shoulder and pelvic girdles) that attach the limbs to the axial skeleton.

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Homeostasis is the process by which the body maintains a stable internal environment despite external changes. It is crucial for the proper functioning of cells and organs, and for overall health and survival.

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The endocrine system communicates through hormones released into the bloodstream, which can affect distant target organs over a longer period. The nervous system uses electrical impulses and neurotransmitters for rapid, short-term communication between neurons and target cells.

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The integumentary system, which includes the skin, hair, nails, and associated glands, protects the body from external damage, regulates temperature, prevents dehydration, and provides sensory information.

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