Study and Learn with 1000s of Biology MCQs
Nervous System MCQs
A _____ is a good example of an animal with a nerve net.
starfish
shark
Human
cow
starfish
Animals with a defined head (such as worms, insects, reptiles, mammals, and birds) possess a _____ -part nervous system
3
5
2
6
2
_____ consists of the animal’s brain and central neurons
central nervous system
peripheral nervous system
Both of these
None of these
central nervous system
_____ is housed in the head.
central nervous system
peripheral nervous system
Both of these
None of these
central nervous system
The tendency in animals to have neurons concentrated in the head end of the body is called?
Inflammation
transportation
cephalization
None of these
cephalization
The trend toward having a central nervous system is referred to as _____ ?
centralization
Inflammation
transportation
None of these
centralization
Neuron Structure MCQs
The nervous system contains _ types of cells
4
8
10
2
2
_ are the cells that receive and transmit signals
Epithelial
muscle
neurons
None of these
neurons
_ are the support systems for the neurons
neuroglial cells
Epithelial cells
Muscle cells
Cardiac cells
neuroglial cells
Neuron has _ ?
Mitochondria
endoplasmic reticulum
Golgi apparatus
All of these
All of these
Neurons have Tiny projections called _ branch off the nerve cell body at the receiving end of the neuron
axons
dendrites
Duodenums
bronchioles
dendrites
The _ act like tiny antennae that pick up signals from other cells
axons
dendrites
Duodenums
bronchioles
dendrites
a side of the neuron extends into a long, thin, branching fiber called a _
axon
dendrite
Duodenum
bronchiole
axon
The _ is insulated by a myelin sheath made up of segments called Schwann cells
dendrite
Duodenum
bronchiole
axon
axon
Nerve impulses enter a neuron through the _
axons
dendrites
Duodenums
Bronchioles
dendrites
Types of Neurons MCQs
major functions of a nervous system are _
to collect signals
to interpret signals
respond to signals
All of these
All of these
_ neurons collect sensory information and bring it to the CNS
Sensory
Motor
interneurons
None of these
Sensory
Sensory neurons are also called _
Afferent neurons
Efferent neurons
Connector neurons
None of these
Afferent neurons
_ within the CNS integrate the sensory information and send out responding signals
Sensory
Motor
interneurons
None of these
interneurons
_ neurons carry the responding signals from the CNS to the cells that are to carry out the response
Sensory
Motor
interneurons
None of these
Motor
interneurons are also called _
Afferent neurons
Efferent neurons
Connector neurons
None of these
Connector neurons
Motor neurons are also called _
Afferent neurons
Efferent neurons
Connector neurons
None of these
Efferent neurons
_ neurons are designed primarily to receive initial stimuli from sense organs
Sensory
Motor
interneurons
None of these
Sensory
_ are responsible for receiving internally generated impulses regarding adjustments that are necessary for the maintenance of homeostasis
Sensory
Motor
interneurons
None of these
Sensory
__ “read” impulses received from sensory neurons
Sensory
Motor
interneurons
None of these
interneurons
the _ determines what (if any) response to generate
Sensory
interneurons
Motor
None of these
interneurons
_ neurons stimulate effector cells that generate reactions
Sensory
interneurons
Motor
None of these
Motor
A _ gives sensory nerves direct access to motor nerves so information can be transmitted immediately
reflex arc
Duodenum
bronchiole
None of these
reflex arc
