Nervous system

Question 1

Primary functions of the nervous systems

Answer 1

Sensing the world​
Transmitting information​
Processing information​
Producing a response​

Question 2

Divisions of the nervous system

Answer 2

A. Central Nervous System (CINS)​
B. Peripheral Nervous System (PNS)​

Question 3

What is contained in the Motor division?

Answer 3

The somatic nervous system (voluntary)
The Autonomic nervous system (ANS) (involuntary)​

Question 4

What reaction occurs due to the sympathetic nervous system?

Answer 4

“Fight or Flight“​

Heart beats increases ​

Accelerates respiratory rate ​

Pupil dilates ​

Inhibits urination and digestion ​

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Question 5

What reaction occurs due to the parasympathetic nervous system?

Answer 5

“Rest and digest “​

Heart beats decreases ​

Respiratory rate decreases ​

Increase urination ​

Constrict pupils ​

Question 6

What is a neuron?

Answer 6

Neurons are the oldest and longest cells in the human body.​

Neurons cannot divide via mitosis but current research suggests that adults can produce new neurons in their brains from neural stem cells.​

Question 7

Anatomy of a neuron

Answer 7

Cell body
Axons
Dendrites
Myelin sheath
Schwann cells
Nodes of Ranvier

Question 8

Types of neurons

Answer 8

Sensory neurons
Interneurons
Motor neurons

Question 9

Reflex arc

Answer 9

The skeletal reflex arc coordinates rapid and involuntary muscle responses through sensory neurons, spinal cord interneurons, and motor neurons.