Crash Course: Anatomy and Physiology questions and answers

What is the main role of the skeletal system in the body? ️️ It provides structure, support, and protection for organs while also aiding movement and blood cell production. Which type of muscle is found only in the heart? ️️ Cardiac muscle, which contracts involuntarily to pump blood continuously. What is the basic functional unit of the nervous system? ️️ The neuron, which transmits electrical signals throughout the body. What organ system is responsible for transporting oxygen and nutrients? ️️ The circulatory system, which moves blood throughout the body. What is the function of alveoli in the lungs? ️️ They allow gas exchange between oxygen and carbon dioxide. What controls most voluntary movements in the body? ️️ The somatic nervous system. What is the main function of red blood cells? ️️ To transport oxygen using hemoglobin. What is the role of the kidneys in the body? ️️ They filter blood and remove waste through urine production. What is homeostasis? ️️ The process of maintaining a stable internal body environment. Which part of the brain controls balance and coordination? ️️ The cerebellum. What is the function of the digestive system? ️️ To break down food and absorb nutrients. What structure connects muscle to bone? ️️ A tendon. What is the function of white blood cells? ️️ To defend the body against infections and foreign invaders. 2 What is the main role of the skin? ️️ To protect the body and regulate temperature. What is the smallest unit of life? ️️ The cell. What carries genetic information in the cell nucleus? ️️ DNA. What is the function of the liver? ️️ To detoxify blood and produce bile for digestion. What is the role of the endocrine system? ️️ To regulate body functions using hormones. What is the purpose of platelets in blood? ️️ To help with blood clotting and wound repair. What structure allows air to enter the lungs? ️️ The trachea. What is the function of the pancreas? ️️ It produces digestive enzymes and regulates blood sugar. What type of tissue covers body surfaces? ️️ Epithelial tissue. What is the function of synovial fluid? ️️ It lubricates joints to reduce friction. What part of the neuron receives signals? ️️ The dendrites. What is the main function of the respiratory system? ️️ To exchange oxygen and carbon dioxide. What is the role of the hypothalamus? ️️ It regulates temperature, hunger, and hormone release. What is the function of cartilage? ️️ It cushions joints and provides flexible support. What is the main organ of the immune system? ️️ The lymphatic system, especially lymph nodes and spleen. 3 What is the function of the large intestine? ️️ To absorb water and form feces. What is the role of hemoglobin? ️️ To bind and transport oxygen in red blood cells. What is the basic unit of muscle contraction? ️️ The sarcomere. What does the pituitary gland do? ️️ It controls other endocrine glands by releasing hormones. What is the function of the thyroid gland? ️️ It regulates metabolism. What is the role of the stomach? ️️ To break down food using acid and enzymes. What is the function of the spinal cord? ️️ It transmits signals between the brain and body. What is the purpose of the diaphragm? ️️ It helps in breathing by expanding and contracting the chest cavity. What type of joint is the shoulder? ️️ A ball-and-socket joint allowing wide movement. What is the function of the small intestine? ️️ To absorb nutrients from digested food. What is the role of melanin in the skin? ️️ It provides pigmentation and protects against UV radiation. What is the function of the ureters? ️️ They carry urine from kidneys to the bladder. What is the main function of bones besides support? ️️ They store minerals and produce blood cells. What is the role of enzymes in digestion? ️️ They speed up the breakdown of food molecules. What is the function of the medulla oblongata? ️️ It controls involuntary actions like breathing and heartbeat. 4 What is the purpose of the lymphatic system? ️️ It returns fluid to the bloodstream and supports immunity. What is the function of the iris in the eye? ️️ It controls the amount of light entering the eye.