Which of the following cavities contains a component of the central nervous system?

A. abdominal

B. pelvic

C. cranial

D. thoracic

Answer Explanation:

The CNS is contained within the dorsal body cavity, with the brain housed in the cranial cavity and the spinal cord in the spinal canal.

In vertebrates, the brain is protected by the skull, while the spinal cord is protected by the vertebrae. The brain and spinal cord are both enclosed in the meninges.

Therefore, the Correct Answer is C.

Q #1: Which of the following is the appropriate threshold value for mammalian neurons?

A. +35 mV

B. -55 mV

C. 0 mV

D. -80 mV

Answer Explanation

A neuron is a messenger cell that receives and transmits information the central nervous system and peripheral nervous system. The neurons are the ones that conduct electrical signals, and there is a level that causes depolarization to reach a given value to cause an action potential.

This level is called threshold of excitation and in mammalian neurons it occurs when the threshold is around -55 mV to -65 mV.
Q #2: Which part of a neuron contains the nucleus?

A. dendrite

B. soma

C. axon

D. synaptic end bulb

Answer Explanation
Q #3: Which of the following are the two major parts of the nervous system?

A. Autonomic nervous system and central nervous system

B. Peripheral nervous system and central nervous system

C. Autonomic nervous system and somatic nervous system

D. Peripheral nervous system and somatic nervous system
Answer Explanation

The nervous systems is divided into two main parts:
- The central nervous system, which comprises of the brain and spinal cord
- The peripheral nervous system, which includes nerves that branch from the spinal cord extending to all other parts of the body

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Which of the following cavities contains a component of the central nervous system?

More Questions on TEAS 7

Q #1: Which of the following is the appropriate threshold value for mammalian neurons?

Answer Explanation

Q #2: Which part of a neuron contains the nucleus?

Answer Explanation

Q #3: Which of the following are the two major parts of the nervous system?

Answer Explanation

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