Physiology is a branch of biology that studies how living organisms function

The body’s ability to maintain stable internal conditions despite external changes, such as regulating temperature or blood glucose levels.

What are the two main divisions of the nervous system?

The central nervous system (CNS) — brain and spinal cord — and the peripheral nervous system (PNS), which includes all nerves outside the CNS.

What is Action Potential

An electrical impulse that travels along a neuron’s axon, allowing the transmission of nerve signals.

What are the three types of muscle tissue?

Skeletal (voluntary), cardiac (involuntary, heart only), and smooth (involuntary, in organs and blood vessels).

The central part of the skeleton, including the skull, vertebral column, and thoracic cage; supports and protects vital organs.

What is the primary function of the skeletal system?

To provide structure, protect organs, enable movement, store minerals (like calcium), and produce blood cells.

The basic functional unit of the nervous system that transmits electrical and chemical signals throughout the body.

What is the difference between the sympathetic and parasympathetic nervous systems?

The sympathetic system prepares the body for “fight or flight,” while the parasympathetic system promotes “rest and digest” functions.

ATP (Adenosine Triphosphate)

The main energy currency of cells, required for muscle contraction and other cellular processes.

What is the role of the diaphragm in respiration?

It contracts and flattens during inhalation to increase thoracic volume, drawing air into the lungs.

which is the correct order from most complex to simplest?

organism, system, organ, tissue, cellular, molecular

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physiology

physiology week 1-6

Question	Answer
What is physiology?	Physiology is a branch of biology that studies how living organisms function
What is homeostasis?	The body’s ability to maintain stable internal conditions despite external changes, such as regulating temperature or blood glucose levels.
What are the two main divisions of the nervous system?	The central nervous system (CNS) — brain and spinal cord — and the peripheral nervous system (PNS), which includes all nerves outside the CNS.
What is Action Potential	An electrical impulse that travels along a neuron’s axon, allowing the transmission of nerve signals.
What are the three types of muscle tissue?	Skeletal (voluntary), cardiac (involuntary, heart only), and smooth (involuntary, in organs and blood vessels).
Axial Skeleton	The central part of the skeleton, including the skull, vertebral column, and thoracic cage; supports and protects vital organs.
What is the primary function of the skeletal system?	To provide structure, protect organs, enable movement, store minerals (like calcium), and produce blood cells.
Neuron	The basic functional unit of the nervous system that transmits electrical and chemical signals throughout the body.
What is the difference between the sympathetic and parasympathetic nervous systems?	The sympathetic system prepares the body for “fight or flight,” while the parasympathetic system promotes “rest and digest” functions.
ATP (Adenosine Triphosphate)	The main energy currency of cells, required for muscle contraction and other cellular processes.
What is the role of the diaphragm in respiration?	It contracts and flattens during inhalation to increase thoracic volume, drawing air into the lungs.
which is the correct order from most complex to simplest?	organism, system, organ, tissue, cellular, molecular

Created by: mbikehlum

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