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Biology > Practice Exam 4 > Flashcards

Practice Exam 4 Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

Supporting cells of the nervous system?

A

Glial cells

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1
Q

What carries information toward the cell body of the neuron?

A

Dendrite

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2
Q

A muscle twitch results from the impulse carried by ? Neuron

A

Efferent

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3
Q

In general, axons with a myelin sheath carry impulses ? than unmyelinated axons

A

Faster

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4
Q

Together, the conduction of an action potential along an axon and the transmission of the impulse at a synapse make up a(n) ? signal

A

Electrochemical

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5
Q

If the inside of the neuron is negatively charged compared to the outside with a value of about -70 mV, then the neuron must be?

A

Resting

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6
Q

What is the sudden and rapid reversal in membrane charge that occurs when a neuron is stimulated?

A

Action potential and nerve impulse

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7
Q

As an action potential travels along an axon, depolarization means that?

A

Sodium ions are entering the cell quickly

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8
Q

Where are synaptic vesicles located?

A

At the terminals of the axon

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9
Q

A Nerotransmitter that binds to a receptor that is a gated potassium channel will cause what change in the postsynaptic neuron?

A

Hyperpolarization

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10
Q

What makes up the central nervous system CNS?

A

Spinal cord and brain

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11
Q

The reaction of the body to deal with an emergency is controlled by the

A

Symphatic division of the autonomic nervous system

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12
Q

White matter consists mostly of

A

Myelinated axons

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13
Q

Cerebrospinal fluid (CSF) functions to ? the brain

A

Cushion
Nourish
Support

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14
Q

The uppermost (most superior) and largest part of the brain is the

A

Cerebrum

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15
Q

The primary motor area of the cerebral cortex is found in the ? lobe

A

Frontal

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16
Q

Which part of the brain do you think is most important to your success in answering this question?

A

Cerebrum

17
Q

Visual stimuli are interpreted in which lobe of the cerebrum

A

Occipital

18
Q

A major portion of the primary motor area of the brain is devoted to the

A

Hand and fingers

19
Q

The thalamus is responsible for which of the following functions

A

Relay of sensory information to the cerebral cortex

20
Q

What is the primary function of the cerebellum

A

Balance, posture, and subconscious coordination of movement

21
Q

You just finished running and your heart rate is fast, as is your breathing rate. The part of the brain that directly controls basic body functions such as a heart rate, blood pressure, and breathing is the

A

Medulla oblongata

22
Q

As Tonya read the obituary of her neighbor, she felt sad. What is considered to be our emotional brain

A

Limbic system

23
Q

Which of the following senses are most connected to the limbic system

A

Smell

24
Q

Which of the following is part of the limbic system and is especially important to memory storage and retrieval

A

Hippocampus

25
Q

What area of the brain filters sensory information and helps to keep us conscious and alert

A

Reticular activating system RAS

26
Q

The spinal cord is similar to the brain and all of the following ways except one. In which way are they different?

A

Control conscious thought

27
Q

The primary functions of the spinal cord involve

A

Reflex actions and communication between the brain and spinal nerves

28
Q

What is the primary advantage of the spinal reflex?

A

It is very fast

29
Q

In the nervous system, a ganglion (such as a dorsal root ganglion) is a?

A

Cluster of neurons cell bodies

30
Q

Spinal nerves are able to carry which of the following types of information

A

Both motor and sensory

31
Q

What senses have receptors distributed widely throughout the body and tend to be a relatively simple in structure

A

General senses

32
Q

All of the special sense organs are located in the

A

Head

33
Q

Myrtle disks are examples of receptors that detect ? In the skin

A

Light touch

34
Q

The photo receptors of the eye are located in the

A

Retina

35
Q

The point of focus on the retina that has the highest concentration of cones and provides maximum visual acuity and color vision is the

A

Fovea

36
Q

What part of the ear is the first to vibrate in response to incoming sound waves?

A

Tympanic membrane (eardrum)

37
Q

To relieve the pressure on the eardrum when scuba diving or flying in an airplane, one must allow air to enter into the

A

Auditory (Eustachian) tube

38
Q

Hearing and equilibrium are both sensed by

A

Mechanoreceptors

39
Q

Static equilibrium is dependent upon the

A

Utricle and saccule

40
Q

The regeneration of neurons is rare in the body. Which type of sensory receptor is a neuron that is actually replaced on a regular basis

A

Olfactory receptor

41
Q

Olfaction and gustation are both sensed by

A

Chemoreceptors

Biology (13 decks)

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