#1
Which organ is responsible for filtering blood and producing urine?
Kidneys
ExplanationKidneys filter blood and produce urine through nephrons.
#2
Which muscle is responsible for breathing in humans?
Diaphragm
ExplanationThe diaphragm contracts to expand the chest cavity, allowing for inhalation.
#3
What is the primary function of the small intestine?
Absorption of nutrients
ExplanationThe small intestine absorbs nutrients from digested food into the bloodstream.
#4
What is the main function of the respiratory system?
Gas exchange
ExplanationThe respiratory system facilitates the exchange of oxygen and carbon dioxide between the body and the environment.
#5
What is the purpose of the skeletal system?
Provide structure and support
ExplanationThe skeletal system provides structural support, protection to organs, and facilitates movement.
#6
Which part of the brain controls voluntary movements and coordination?
Cerebellum
ExplanationThe cerebellum coordinates voluntary movements and balance.
#7
What is the function of the endocrine system?
Control growth and development
ExplanationThe endocrine system regulates growth, development, metabolism, and mood through hormone secretion.
#8
Which of the following is the smallest bone in the human body?
Stapes
ExplanationThe stapes, or stirrup bone, is the smallest bone in the human body, located in the middle ear.
#9
Which hormone is responsible for regulating blood sugar levels?
Insulin
ExplanationInsulin regulates blood sugar levels by facilitating glucose uptake into cells.
#10
Which part of the neuron receives signals from other neurons?
Dendrite
ExplanationDendrites receive signals from other neurons and transmit them to the cell body.
#11
Which of the following is not a component of blood?
Platelets
ExplanationPlatelets are cell fragments responsible for blood clotting and not considered a component of blood.
#12
What is the purpose of the lymphatic system?
Fight infection and disease
ExplanationThe lymphatic system helps fight infection and disease by transporting lymph fluid containing white blood cells.
#13
What is the function of the cerebrum in the brain?
Controlling voluntary movements
ExplanationThe cerebrum controls voluntary movements, sensory perception, and higher cognitive functions.
#14
What is the function of the adrenal glands?
Regulate blood pressure
ExplanationThe adrenal glands secrete hormones involved in regulating blood pressure, metabolism, and stress response.
#15
Which part of the brain is responsible for regulating basic bodily functions like breathing and heart rate?
Medulla oblongata
ExplanationThe medulla oblongata controls autonomic functions such as breathing, heart rate, and blood pressure.