Nervous tissue - Describe the anatomical and functional divisions of the nervous system

8 important questions on Nervous tissue - Describe the anatomical and functional divisions of the nervous system

What are the two different nervous systems? What are their differences?

The central nervous system (CNS) and the peripheral nervous system (PNS).
The central nervous system (CNS) consists of the brain and spinal cord. The peripheral nervous system (PNS) includes all the nervous tissue outside the CNS and the ENS.

What is a reflex?

A reflex is an automatic response. An example is pulling back your hand when your touching something that is hot.

What is the autonomic nervous system?

The autonomic nervous system (ANS), visceral motor system, automatically regulates smooth muscle, cardiac muscle, glandular secretions, and adipose tissue at the subconscious level.
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What are the two divisions that the autonomic nervous system contains?

  • Parasympathetic division
  • Sympathetic division

These two divisions have, most of the time, antagonistic functions.

Describe the three anatomical divisions of the nervous system.

The three anatomical divisions of the nervous system are the central nervous system (CNS), consisting of the brain and spinal cord, the peripheral nervous system (PNS), consisting of all nervous tissue outside the CNS and ENS, and the enteric nervous system (ENS), consisting of the network of neurons and nerve networks in the walls of the digestive tract.

Describe the two functional divisions of the peripheral nervous system, and cite their primary functions.

The two functional divisions of the peripheral nervous system are the afferent division, which brings sensory information to the CNS from receptors in peripheral tissues and organs, and the efferent division, which carries motor commands from the CNS to muscles, glands, and adipose tissue.

Identify the two components of the efferent division of the PNS and their effectors.

The two components of the efferent division of the PNS and their effectors are the somatic nervous system (SNS) and the automatic nervous system (ANS) The SNS effectors are skeletal muscles and the ANS effectors include smooth and cardiac muscle, glands, and adipose tissue.

What would be the effect of damage to the afferent division of the PNS?

Damage to the afferent division of the PNS, which is composed of nerves that carry sensory information to the brain and spinal cord, would interfere with a person's ability to experience a variety of sensory stimuli.

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