Nervous System

Based on the diagram below, which sequence shows how impulses pass through from these structures involved in reflex action?

• P > S > R > Q

• S > P > Q > R

• Q > P > R > S

• Q > R > S > P

Tags

NGSS.MS-LS1-3

The diagram below shows a nerve cell. What structure can be found in X and Y?

• 
  X=gland; Y=spinal cord

• X=brain; Y=leg

• X= brain; Y=stomach

• X=eye; Y= hand

Tags

NGSS.MS-LS1-2

Baris accidentally touches a very hot object and immediately takes his hand away. What is considered as the effector in this reflex action?

• the spinal cord

• a sensory neuron

• a heat receptor in his hand

• a muscle in his arm

Which part form the central nervous system?

• 1 amd 3

• 1 and 2

• 2 and 3

• 2 and 4

Which is a characteristic of the parasympathetic division in the autonomic system?

• dilation of the pupil

• speeds up heart rate

• contraction of bladder

• pupil dilation

The divisions of the nervous system that have antagonistic actions, or opposing actions are ________. 

• central and peripheral

• autonomic and somatic

• motor and sensory

• sympathetic and parasympathetic

What is the important output of coordinated body systems?

• survival

• homeostasis

• adaptation

• evolution

Which is a characteristic of the sympathetic division in the autonomic system?

• dilates bronchi

• stimulates digestion

• constricts pupils

• slows down heart rate

It serves as an information pathway that passes messages from the body to the brain and back.

• spinal column

• brain cells

• spinal cord

• synapses

Edna saw a young boy run across the street and he got hit by a car. She rushed to the child. She was sweating and her heart was beating fast. Definitely, she was in panic. Her state resulted from the activation of what division of the nervous system?

• sympathetic

• parasympathetic

• somatic

• central