Nervous System & Nervous Tissue
Different action potentials vary in strength, depending on the strength of the stimulus.
True/False
False
In the spinal cord where does sensory information come in?
A. Lateral
B. Ventral
C. Dorsal
D. Inferior
C. Dorsal
Which receptor type detects touch or pressure?
A. Thermoreceptors
B. Photoreceptors
C. Mechanoreceptors
D. Chemoreceptors
C. Mechanoreceptors
What is dual innervation?
A. One organ controlled by only the brain
B. One organ receiving input from both sympathetic and parasympathetic divisions
C. One nerve controlling multiple organs
D. Only sensory control of an organ
B. One organ receiving input from both sympathetic and parasympathetic divisions
Which type of papillae is the most common?
A. Vallate papillae
B. Foliate papillae
C. Filiform papillae
D. Fungiform papillae
D. Fungiform papillae
Temporal summation occurs when:
A. Signals come from multiple presynaptic neurons
B. Signals all come from one presynaptic neuron
C. Signals cancel each other
D. No signals are received
B. Signals all come from one presynaptic neuron
All of the following are major parts of the CNS except?
A. Cerebellum
B. Pons
C. Diencephalon
D. Nerves
D. Nerves
The main function of the PNS is to?
A. Send signals between the CNS and the rest of the body
B. Protect the brain
C. Produce cerebrospinal fluid
D. Control only reflexes
A. Send signals between the CNS and the rest of the body
Which way is the nervous system organized?
A. CNS → PNS → ANS/Somatic
B. PNS → CNS → Brain
C. ANS → CNS only
D. Brain → nerves only
A. CNS → PNS → ANS/Somatic
Olfactory information is primarily processed in which brain region?
A. Occipital lobe
B. Temporal lobe
C. Parietal lobe
D. Cerebellum
B. Temporal lobe
When voltage-gated potassium channels open and the membrane potential lowers what is that called?
A. Resting potential
B. Hyperpolarization
C. Repolarization
D. Depolarization
C. Repolarization
Which of the following is the best description of RAS?
A. RAS is active while sleeping
B. RAS helps with keeping your balance
C. RAS keeps you awake and aware
D. RAS makes cerebral spinal fluid
C. RAS keeps you awake and aware
Which cranial nerve is responsible for heart and digestive regulation?
A. Trigeminal
B. Vagus
C. Facial
D. Hypoglossal
B. Vagus
Which of the following effects is caused by sympathetic activation?
A. Decreased heart rate
B. Increased digestion
C. Bronchodilation
D. Increased urination
C. Bronchodilation
Somatic stimuli are detected throughout the body by the general senses. Which of the following is an example of somatic stimuli?
A. Sound
B. Pain
C. Chemicals
D. Light
B. Pain
What is the function of the axon hillock in a neuron?
A. To insulate and speed up a transmission
B. Receives incoming signals
C. Coordinate incoming signals
D. The part of the neuron where the message travels
C. Coordinate incoming signals
What is the order of the three Meninges layers, from outside to inside:
A. arachnoid mater → pia mater → dura mater
B. pia mater → dura mater → arachnoid mater
C. dura mater → arachnoid mater → pia mater
D. arachnoid mater → dura mater → pia mater
C. dura mater → arachnoid mater → pia mater
Which reflex is monosynaptic?
A. Withdrawal reflex
B. Extensor reflex
C. Crossed-extensor reflex
D. Autonomic reflex
B. Extensor reflex
Which correctly describes neuron length in the ANS?
A. Sympathetic = long pre, short post
B. Parasympathetic = long pre, short post
C. Both have same length neurons
D. Sympathetic = long post only
A. Sympathetic = long pre, short post
Vascular tunic is the middle layer of the eyeball. Which of the following is not a part of the vascular tunic?
A. The iris
B. The ciliary body
C. The optic disc
D. The choroid
C. The optic disc
Where can you generally find bipolar neurons?
A. General senses
B. Special senses
C. Throughout the central nervous system
D. Cerebellum
B. Special senses
Which of the following is NOT a function of the cerebellum?
A. Assists with posture and balance
B. Initiates voluntary skeletal muscle contraction
C. Stores motor patterns for learned movements
D. Coordinates smooth and precise movements
B. Initiates voluntary skeletal muscle contraction
Which statement is correct about the organization of the PNS?
A. Afferent division carries motor signals from the brain.
B. Visceral efferent is part of the autonomic nervous system.
C. Somatic nervous system controls the skeletal muscle.
D. Autonomic controls voluntary movement.
C. Somatic nervous system controls the skeletal muscle.
Which structure mainly receives only sympathetic input?
A. Heart
B. Sweat glands
C. Digestive tract
D. Lungs
B. Sweat glands
Which answer choice is the correct order of olfactory processing?
A. Receptor → nerve → bulb → tract → cortex
B. Receptor → tract → cortex → bulb → nerve
C. Tract → bulb → nerve → cortex → receptor
D. Bulb → tract → cortex → nerve → receptor
A. Receptor → nerve → bulb → tract → cortex