03: Coordination and Control
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Explain the mechanism of nerve impulse transmission.
Nerve impulses are transmitted through neurons as electrical signals. When a neuron is stimulated, ion channels open, causing an action…
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Describe the role of hormones in human physiology.
Hormones are chemical messengers secreted by endocrine glands that regulate processes such as growth, metabolism, immune function, and reproduction. They…
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Define coordination in biology.
Coordination in biology refers to the regulation and integration of different biological processes within an organism to ensure its functions…
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What is the role of the nervous system?
The nervous system controls and coordinates body functions, responding to stimuli through electrical impulses and regulating activities like movement, thought,…
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Explain the function of neurons.
Neurons are specialized cells that transmit electrical signals, enabling communication between different parts of the body. They play a key…
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What is a synapse?
A synapse is the junction between two neurons, where electrical signals are transmitted through the release of neurotransmitters.
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Define reflex action.
Reflex action is an involuntary, rapid response to a stimulus, typically mediated by the spinal cord, bypassing the brain for…
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What is the role of the endocrine system?
The endocrine system regulates various bodily functions through the release of hormones, controlling processes such as metabolism, growth, and reproduction.
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Explain the term ‘hormone’.
A hormone is a chemical messenger produced by glands that regulate specific physiological processes in the body, such as growth,…
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What is the function of the pituitary gland?
The pituitary gland, known as the ‘master gland,’ regulates other endocrine glands and controls important functions such as growth, reproduction,…
