Human Body Systems
Biology ⇒ Human Biology
Human Body Systems starts at 6 and continues till grade 12.
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See sample questions for grade 11
Describe the pathway of blood through the heart, starting from the right atrium.
Describe the role of the diaphragm in respiration.
Describe the role of the hypothalamus in the human body.
Describe the role of the synapse in neural communication.
Explain how the structure of the alveoli is adapted for efficient gas exchange.
Explain the difference between arteries and veins.
Explain the difference between the somatic and autonomic nervous systems.
Explain the role of the small intestine in the digestive system.
Name the two main divisions of the human nervous system.
A patient is experiencing muscle weakness and fatigue. Laboratory tests reveal a deficiency in acetylcholine at neuromuscular junctions. Explain how this deficiency affects the muscular system.
A person inhales air containing 21% oxygen and exhales air containing 16% oxygen. Calculate the approximate percentage of oxygen absorbed by the body during one breath.
Compare and contrast the roles of the sympathetic and parasympathetic divisions of the autonomic nervous system in regulating heart rate.
Describe the process of synaptic transmission, including the roles of neurotransmitters and receptors.
Explain how negative feedback mechanisms maintain homeostasis in the human body, using the regulation of blood glucose as an example.
Explain how the structure and function of capillaries facilitate the exchange of substances between blood and tissues.
