WGU Anatomy and Physiology 1- Latest version Questions and answers well explained

WGU Anatomy and Physiology 1-
Questions and answers well explained
What is the primary function of the cell membrane in human cells?
✔️✔️ It regulates what enters and leaves the cell while maintaining homeostasis

How does diffusion differ from facilitated diffusion?
✔️✔️ Diffusion occurs without transport proteins, while facilitated diffusion requires membrane
proteins

What role do mitochondria play in a cell?
✔️✔️ They produce ATP through cellular respiration

What is the function of ribosomes in a cell?
✔️✔️ They synthesize proteins

How does osmosis affect cell volume?
✔️✔️ It causes water to move across a membrane, changing cell size depending on solute
concentration

What is the function of the nucleus?
✔️✔️ It stores DNA and controls cell activities

What is a tissue?
✔️✔️ A group of similar cells working together to perform a specific function

How are epithelial tissues specialized?
✔️✔️ They are specialized for protection, absorption, and secretion

What is the main function of connective tissue?
✔️✔️ To support, bind, and protect other tissues

What distinguishes muscle tissue from other tissue types?
✔️✔️ Its ability to contract and produce movement

What is the role of nervous tissue?
✔️✔️ To transmit electrical signals for communication

How does the integumentary system protect the body?
✔️✔️ It acts as a barrier against pathogens, regulates temperature, and prevents water loss




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,What is the function of melanin in the skin?
✔️✔️ It protects against ultraviolet radiation

How does the skeletal system support the body?
✔️✔️ It provides structure, protection, and aids in movement

What is the function of bone marrow?
✔️✔️ It produces blood cells

What is the role of calcium in bones?
✔️✔️ It provides strength and hardness

How do joints contribute to movement?
✔️✔️ They allow bones to move relative to each other

What is a synovial joint?
✔️✔️ A freely movable joint containing synovial fluid

What is the function of cartilage?
✔️✔️ To reduce friction and absorb shock in joints

What is the main function of the muscular system?
✔️✔️ To produce movement and maintain posture

How do skeletal muscles differ from smooth muscles?
✔️✔️ Skeletal muscles are voluntary, while smooth muscles are involuntary

What is the function of tendons?
✔️✔️ To connect muscle to bone

What is the role of ligaments?
✔️✔️ To connect bone to bone

How does the nervous system coordinate body activities?
✔️✔️ By sending electrical and chemical signals

What is the central nervous system?
✔️✔️ The brain and spinal cord

What is the peripheral nervous system?
✔️✔️ Nerves outside the brain and spinal cord

What is the function of neurons?
✔️✔️ To transmit nerve impulses

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,What is a synapse?
✔️✔️ The junction between two neurons

What is the function of neurotransmitters?
✔️✔️ To transmit signals across synapses

What is the role of the endocrine system?
✔️✔️ To regulate body functions through hormones

What is a hormone?
✔️✔️ A chemical messenger secreted into the bloodstream

What is the function of the pituitary gland?
✔️✔️ It controls other endocrine glands

What is the role of the thyroid gland?
✔️✔️ To regulate metabolism

What is the function of insulin?
✔️✔️ To lower blood glucose levels

What is the role of the circulatory system?
✔️✔️ To transport oxygen, nutrients, and wastes

What is the function of red blood cells?
✔️✔️ To carry oxygen

What is hemoglobin?
✔️✔️ A protein in red blood cells that binds oxygen

What is the role of white blood cells?
✔️✔️ To fight infections

What is the function of platelets?
✔️✔️ To help in blood clotting

What is the heart’s main function?
✔️✔️ To pump blood throughout the body

What is the role of arteries?
✔️✔️ To carry blood away from the heart

What is the role of veins?
✔️✔️ To return blood to the heart

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, What is the function of capillaries?
✔️✔️ To allow exchange of substances between blood and tissues

What is the role of the respiratory system?
✔️✔️ To exchange oxygen and carbon dioxide

What happens in the alveoli?
✔️✔️ Gas exchange occurs

What is the function of the diaphragm?
✔️✔️ It aids in breathing by contracting and relaxing

What is the role of the digestive system?
✔️✔️ To break down food and absorb nutrients

What is the function of the stomach?
✔️✔️ To chemically and mechanically digest food

What is the role of the small intestine?
✔️✔️ To absorb nutrients

What is the function of the large intestine?
✔️✔️ To absorb water and form feces

What is the role of the liver in digestion?
✔️✔️ To produce bile and process nutrients

What is the function of the pancreas?
✔️✔️ To produce digestive enzymes and hormones

What is the role of the urinary system?
✔️✔️ To remove waste and regulate fluid balance

What is the function of the kidneys?
✔️✔️ To filter blood and produce urine

What is the role of nephrons?
✔️✔️ To filter blood at the microscopic level

What is the function of the bladder?
✔️✔️ To store urine

What is the role of the immune system?
✔️✔️ To defend the body against pathogens

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