Physiology questions & answers
What is the function of the cell membrane in human cells?
✔️✔️ It controls what enters and leaves the cell, maintaining internal balance
What type of tissue connects and supports different parts of the body?
✔️✔️ Connective tissue provides support, structure, and binding
What is the main role of the nucleus in a cell?
✔️✔️ It stores genetic material and controls cell activities
What organelle is responsible for producing energy in the cell?
✔️✔️ The mitochondrion generates ATP through cellular respiration
What does homeostasis refer to in the human body?
✔️✔️ It is the maintenance of a stable internal environment
What type of muscle is found in the walls of internal organs?
✔️✔️ Smooth muscle controls involuntary movements
What is the basic structural unit of the human body?
✔️✔️ The cell is the smallest unit of life
What system is responsible for transporting oxygen and nutrients?
✔️✔️ The circulatory system carries blood throughout the body
What is the function of red blood cells?
✔️✔️ They transport oxygen from the lungs to tissues
What part of the neuron receives incoming signals?
✔️✔️ Dendrites receive signals from other neurons
What is the largest organ in the human body?
✔️✔️ The skin protects and covers the body
What is the role of enzymes in the body?
✔️✔️ They speed up chemical reactions
What type of joint allows movement in many directions?
✔️✔️ A ball-and-socket joint enables wide range of motion
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, What is the function of the respiratory system?
✔️✔️ It allows gas exchange between oxygen and carbon dioxide
What structure separates the thoracic and abdominal cavities?
✔️✔️ The diaphragm acts as a barrier and aids breathing
What is the main function of white blood cells?
✔️✔️ They defend the body against infection
What does the skeletal system primarily provide?
✔️✔️ Support, protection, and structure for the body
What is the function of the small intestine?
✔️✔️ It absorbs nutrients from digested food
What type of epithelial tissue lines the lungs for gas exchange?
✔️✔️ Simple squamous epithelium allows rapid diffusion
What is the role of the endocrine system?
✔️✔️ It releases hormones to regulate body functions
What is the function of the spinal cord?
✔️✔️ It transmits signals between the brain and body
What structure in the eye controls the amount of light entering?
✔️✔️ The iris adjusts the size of the pupil
What is the main function of the liver?
✔️✔️ It detoxifies substances and processes nutrients
What type of blood vessel carries blood away from the heart?
✔️✔️ Arteries transport blood away from the heart
What is the function of cartilage?
✔️✔️ It provides flexible support and reduces friction in joints
What is the primary role of the kidneys?
✔️✔️ They filter waste from the blood and produce urine
What type of muscle is under voluntary control?
✔️✔️ Skeletal muscle allows conscious movement
What is the function of hemoglobin?
✔️✔️ It binds and carries oxygen in red blood cells
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