abubunervous.three

Question 1

Simple spinal reflexes occur independent of the brain.

Answer 1

-True

Question 2

Sensory stimuli enter the spinal cord via

Answer 2

-Afferent Axons

Question 3

A simple spinal reflex typically involves how many neurons?

Answer 3

-3

Question 4

Interneurons are located in the

Answer 4

-Spinal Cord

Question 5

Sensory receptors are found

Answer 5

-Throughout the body

Question 6

Which type of cell is composed of one dendrite and one axon, and is found in the eye and nose?

Answer 6

-Bipolar Neuron

Question 7

The peripheral nervous system (PNS) consists of

Answer 7

-All the nerves and ganglia outside of the brain and spinal cord

Question 8

Afferent fibers carry general sensory input synapse in the __________ , and then the information is relayed to the primary somatosensory cortex.

Answer 8

-Thalamus

Question 9

TTX is a toxin that blocks Na+ channels from opening. What effect would this have on the function of neurons (specifically the action potential)?

Answer 9

-The neurons would be unable to depolarize

Question 10

Are released by cells that have effects on other

Answer 10

-Paracrine Chemical Messengers

Question 11

Which of the following areas can you use the broad flat side of the reflex hammer to test reflexes?Bottom of Form

Answer 11

• Patellar
• Calcaneal
• Biceps Brachii
• Plantar

Question 12

Arrange the events of synaptic transmission in correct sequence.

1. Sodium ions diffuse into the cell and cause a local potential
2. Neurotransmitter binds with receptor on postsynaptic cell
3. Neurotransmitter diffuses across the synaptic cleft
4. Membrane permeability to sodium ions on postsynaptic cell increases
5. Action potential in a presynaptic cell causes release of neurotransmitter

Answer 12

-5,3,2,4,1

Question 13

Below are given the steps of the patellar reflex arc. What is the correct order of events from the time the hammer taps the patellar ligament to the knee jerk response?

1. The leg extends at the knee.
2. Sensory neurons conduct the action potentials to the spinal cord.
3. Motor neurons are stimulated and generate an action potential.
4. Sensory neurons synapse with motor neurons in the spinal cord.
5. The AP travels to the quadriceps femoris and causes it to contract.
6. Sensory receptors in the muscle detect the stretch of the tendon and muscles.

Answer 13

-6-2-4-3-5-1

Question 14

Which of the ff statements regarding neuroglia is false

Answer 14

-Neuroglia produce action potentials for skeletal muscles.

Question 15

Which of the following lists the parts of a reflex arc in the correct sequence?

Answer 15

-Receptor, Sensory Neuron, Interneuron, Motor Neuron, Effector

Question 16

After a car accident, the ER doctor uses a hammer to test your patellar reflex response. You have no initial knee jerk response but after 2 weeks your response is exaggerated. What does it indicate?

Answer 16

-The neurons within the brain or spinal cord that modify this reflex have been damaged.

Question 17

In the Demonstrate Monosynaptic Reflexes Lab, why do the reflexes occur? Select all that apply.

Answer 17

• By triggering the tendon of a muscle, you are initiating the reflex arc.
• By triggering stretch receptors in the muscle, you are initiating the reflex arc.
• By triggering a skin receptor near the muscle, you are initiating the reflex arc.
• By triggering the muscle effector, you are initiating the reflex arc.

Question 18

A bundle of axons and their connective tissue sheaths is called a(n) ___

Answer 18

-Nerve

Question 19

Place the names of the cranial nerves in order based on their corresponding number.

Answer 19

• Olfactory
• Optic
• Oculomotor
• Trochlear
• Trigeminal
• Abducens
• Facial
• Vestibulocochlear
• Glossopharyngeal
• Vagus
• Accessory
• Hypoglossal

Question 20

The most inferior portion of the diencephalon, which is in control of body temperature, hunger, and thirst, is the _____.

Answer 20

-Hypothalamus

Question 21

If you were testing the plantar reflex by stroking the lateral aspect of the sole of the foot in an adult which of the following would be a normal response?

Answer 21

-Flexion of toes downward

Question 22

Evaluation of auditory and olfactory input, memory, abstract thought, and judgment are all associated with

Answer 22

-Temporal Lobe

Question 23

The __________ occurs in response to a sudden increase in light intensity.

Answer 23

-Pupillary Reflex

Question 24

Which organ systems are the most important for maintaining homeostasis?

Answer 24

-Nervous And Endocrine

Question 25

Given these areas of the cerebral cortex:
Prefrontal area
Premotor area
Primary motor cortex
If a person decided to jump over a chair, planned how to do it, and then actually jumped over the chair, which sequence below represents the correct order that these areas of the brain were involved?

Answer 25

-1,2,3

Question 26

The part of the brainstem that regulates heart rate, breathing, swallowing, coughing, & sneezing is the

Answer 26

-Medulla Oblongata

Question 27

Which of the ff is not a function of the astrocytes?

Answer 27

-Produce the myelin sheath around axons

Question 28

Water-soluble hormones

Answer 28

-Bind to membrane bound receptors in the cell membrane of the target

Question 29

Camilia often forgets a lot of things, including the names of her children and grandchildren. Which lobe of her brain has been affected?

Answer 29

-Temporal Lobe

Question 30

Which of the following is not TRUE of K+ leak channels?

Answer 30

-They are responsible for the depolarization phase of the action potential.