3A CNS and PNS Quiz

The main function of sensory neurons is to

• form a connection between neurons in the spinal cord to enable a spinal reflex to occur

• carry afferent information inwards to the spinal cord so it can be sent to the brain for further processing

• carry efferent information inwards to the spinal cord so it can be sent to the brain for further processing

• carry information from the CNS to the rest of the body

Which subdivision of the human nervous system is responsible for deciding to initiate the voluntary movement involved in picking up a pen?

• somatic nervous system

• sympathetic nervous system

• brain

• autonomic nervous system

The __________ nervous system __________ the responsiveness of organs and muscles during activity, stress or when threatened.

• sympathetic; increases

• sympathetic; decreases

• parasympathetic; increases

• parasympathetic; decreases

Which statement about conscious or unconscious responses by the nervous system is correct?

• unconscious responses are controlled by the spinal cord

• conscious responses are regulated by the somatic nervous system

• unconscious responses involve a lack of awareness

• conscious responses initiate the autonomic nervous system

Which of the following paired options describes the sympathetic and parasympathetic nervous systems?

• the sympathetic NS is dominant during the freeze response, whereas the parasympathetic NS is dominant during a fight-or-flight response

• the parasympathetic NS is dominant during the freeze response, whereas the sympathetic NS is dominant during a fight-or-flight response

• the sympathetic NS is dominant during the fight-flight-freeze response

• the parasympathetic NS is dominant during the fight-flight-freeze response

Which statement regarding a spinal reflex is incorrect?

• A spinal reflex allows us to make rapid responses to stimuli that could be potentially dangerous

• A spinal reflex occurs in the spinal cord independently of the brain

• A spinal reflex is a conscious voluntary response that occurs only in the spinal cord

• A spinal reflex can involve three types of specialised neurons: sensory neurons, interneurons and motor neurons

Every morning Benny enjoys listening to music while answering his emails. Which of the following identifies the most likely type of processing and information for each activity undertaken by Benny?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-8

Which is NOT true of the sympathetic and parasympathetic nervous system when each is dominant?

• The sympathetic NS suppresses digestion and the parasympathetic NS constricts the bladder

• The sympathetic NS dilates the pupils and the parasympathetic NS stimulates the liver

• The sympathetic NS increases adrenaline production and the parasympathetic NS decreases blood pressure

• The sympathetic NS suppresses sweating and the parasympathetic NS decreases oxygen supply

Tags

NGSS.HS-LS1-3

Judy and Stan are on a date together and decide to buy ice cream. When Stan reaches into his pocket to pay for the ice cream, he immediately withdraws his hand after it touches his toothpick.

The withdrawal of Stan's hand is

• an unconscious and adaptive response that enables him to avoid further damaging his hand from the stimuli

• a conscious and voluntary response that protects him from the sharp stimulus he touched in his pocket

• an unconscious and involuntary response that allows him to pay for his ice cream

• an unconscious sensory response which ensures that he is able to quickly safeguard his hand form further pain experienced

Judy and Stan are on a date together and decide to buy ice cream. When Stan reaches into his pocket to pay for the ice cream, he immediately withdraws his hand after it touches his toothpick.

Judy began eating her ice cream. Which of the following best describes the process involved with this?

• her sensory neurons are sent along her efferent tract to her brain to process the ice cream flavour

• her motor neurons are sent along her efferent tract to her hand to allow her to eat her ice cream

• her sensory neurons send a message of the ice cream flavour along the afferent tract to her brain for processing

• her motor neurons send a message along her afferent tract to her hand to allow her to eat her ice cream