1. In the knee-jerk reflex arc, the synapse between a sensory neuron and a motor neuron occurs where? a.in the brain b.within the muscle of the leg c.within the spinal cord d.between the receptor and the spinal cord2. When a neuron is at rest, a.there is a voltage difference across the membrane of about 70 millivolts. b.the interior is negatively charged. c.the fluid outside the membrane has more sodium and less potassium than the cytoplasm. d.all of these3. Which of the following is NOT true concerning sensory neurons? a.They relay information to the spinal cord. b.They have receptor regions for detection of stimuli. c.They are one of three types of neurons. d.They lie in the pathway between the interneurons and motor neurons.4. Which is an example of an effector? a.sensory neurons b.smooth muscles c.sensory receptors d.motor neurons

Neurons- are electrically excitable cells that transmit impulses to and from the brain. They…

Answered: In the knee-jerk reflex arc, the…

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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1. In the knee-jerk reflex arc, the synapse between a sensory neuron and a motor neuron occurs where?

	a.	in the brain
	b.	within the muscle of the leg
	c.	within the spinal cord
	d.	between the receptor and the spinal cord

2. When a neuron is at rest,

	a.	there is a voltage difference across the membrane of about 70 millivolts.
	b.	the interior is negatively charged.
	c.	the fluid outside the membrane has more sodium and less potassium than the cytoplasm.
	d.	all of these

3. Which of the following is NOT true concerning sensory neurons?

	a.	They relay information to the spinal cord.
	b.	They have receptor regions for detection of stimuli.
	c.	They are one of three types of neurons.
	d.	They lie in the pathway between the interneurons and motor neurons.