Anatomy And Physiology Advanced Practice Questions! Quiz

Reflexes are automatic and rapid responses to stimuli, whether they are internal or external. They are not under conscious control and occur in order to protect the body from potential harm or danger. Examples of reflexes include blinking when a bright light is suddenly shone in the eyes or pulling the hand away from a hot surface. Therefore, the statement that reflexes are fast responses to changes in the environment is true.

Reflex action occurs when motor cells are stimulated by stimuli transmitted by afferent neurons from the tissues. This means that when a stimulus is detected by sensory neurons, it is quickly and automatically processed by the nervous system, resulting in an immediate and involuntary response. This is a fundamental mechanism that helps protect the body and maintain homeostasis. Therefore, the statement is true.

The autonomic nervous system is responsible for controlling and regulating involuntary bodily functions such as the contraction of smooth muscles, cardiac muscles, and the secretion of certain glands. These functions include the beating of the heart, digestion, breathing, and the release of hormones. Therefore, it is true that the autonomic nervous system controls and regulates the activities of these muscles and glands.

The autonomic nervous system is responsible for regulating the internal organs and blood vessels of the body. It controls involuntary functions such as heart rate, digestion, and breathing. Both the parasympathetic and sympathetic divisions are part of the autonomic nervous system, but they have different functions. The parasympathetic division is responsible for rest and digestion, while the sympathetic division is responsible for the fight or flight response. Therefore, the correct answer is autonomic.

The statement is false because the solar plexus is actually located in front of the heart in the thoracic region. The solar plexus is a complex network of nerves located in the abdomen, behind the stomach and in front of the aorta. It is responsible for regulating various bodily functions such as digestion and heart rate.

The central nervous system is responsible for processing and interpreting sensory information, which includes all sensations. It also plays a role in the functioning of special senses such as vision, hearing, taste, and smell. Additionally, the central nervous system is involved in higher mental processes such as reasoning, problem-solving, and decision-making.

The statement is incorrect. Sensory stimulus is carried into the spinal cord by sensory fibers, not motor fibers. Motor fibers, on the other hand, carry signals from the brain to the muscles and glands to initiate movement or other responses.