The <u>autonomic</u> nervous system provides involuntary regulation of smooth muscle, cardiac muscle, and glandular activity.
The peripheral nervous system's autonomic nervous system controls physiologic functions including digestion, breathing, blood pressure, and sexual arousal in addition to other involuntary functions like heart rate. It is divided into sympathetic, parasympathetic, and enteric regions, each of which has a unique anatomical structure. Some bodily functions, like blood pressure and respiratory rate, are regulated by the autonomic nervous system. The paraventricular nucleus of the hypothalamus is the critical brain region for the central regulation of the autonomic nervous system. Autonomic neuropathy most frequently results from diabetes. Infections with viruses or bacteria, certain drugs, or other medical disorders might potentially be the reason. The type of injured nerve affects the symptoms and course of therapy.
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2. Dinosaurs appeared before mammals (a)
Correct Statements are -
- They’re made up of more than one substance.
- They’re readily available in nature.
<h3>
What are Composite Materials?</h3>
- Composite materials are created by combining two or more substances with dissimilar properties.
- Composite materials have distinct properties that distinguish them from their constituents, and the constituents can be easily distinguished within the composite materials because they do not blend together.
- Some composite materials are abundant in nature. Wood, for example, is a composite material made up of cellulose and lignin.
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The correct answers are A and B
Answer:D
Explanation: The pulmonary air sacs of birds only permit a unidirectional flow of air through the lungs. Unidirectional flow means that air is inhale and exhale through one trachea alternatively. This means the bird lungs only receive largely fresh air which has a high oxygen content during inhalation and do not receive fresh during exhalation. While air flow bidirectional in mammals.