Examlex
Which of the following is a correct sequence of levels in life's hierarchy, proceeding downward from an individual animal?
Collagen
A major structural protein found in skin, bones, tendons, and other connective tissues, crucial for tissue strength and elasticity.
Autonomic Nervous System
The part of the nervous system that controls involuntary actions and regulates physiological functions such as heart rate, digestion, and respiratory rate.
Sympathetic Nervous System
A component of the autonomic nervous system responsible for initiating the response commonly known as fight or flight.
Cardiovascular System
A complex system consisting of the heart and blood vessels that circulates blood throughout the body to supply oxygen and remove waste products.
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