Examlex
The following statements describe respiratory systems. Match the appropriate system from the list to each description. Some choices may be used more than once.
-do not expand or contract
A)respiratory surface
B)gills
C)bird lungs
D)mammalian lungs
Muscle Tone
The continuous and passive partial contraction of muscles, or the muscle's resistance to passive stretch during resting state.
Heart Rate
The number of heartbeats per unit of time, usually expressed as beats per minute (bpm).
Voluntary Movements
Movements that are under conscious control, such as walking, grabbing, or speaking.
Hypothalamus
A region of the brain responsible for hormone production and regulation of essential body functions.
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