Homework-Lecture 7

•Which of the following neurons whose cell body isn’t present in the grey matter?

Neuroglia
Motor neuron
Connector neuron
Sensory neuron

•In the reflex arc, the terminal arborizations of connector neurons are connected with ……….

the dendrites and cell body of sensory neurons.
the dendrites and cell body of motor neurons.
the sensory receptors.
the responding organs.

•If a driver was subjected to an accident in which his arm was injured, and after transporting him to the hospital, he told the doctor that he can feel his hand, but he couldn’t move it. How can you help the doctor in the initial diagnosis in case of the absence of any fractures ?

The damage of receptors in the hand.
The damage of nervous link between the hand receptors and central nervous system.
The damage of nervous link between the central nervous system and responding organ.
The damage of both links in (b) and (c) together.

•The opposite figure represents a reflex arc, which of the following represents the correct arrangement of neurons through which the nerve impulse passes ?

X -> Y -> Z
Y -> Z -> X
Y -> X -> Z
Z -> X -> Y

•Inside the grey matter of spinal cord, the cell bodies’ dendrites for each of …..…… neurons are present.

sensory and connector
sensory and motor
motor and connector
sensory, motor and connector

•To which type of cells does the opposite cell belong ?

Motor neurons.
Connector neurons.
Sensory neurons.
Neuroglia

The opposite figure represents a neuron, which choice in the following table can (X) and (Y) be present at ?

A
B
C
D

The opposite figure represents a neuron in which the nerve impulse passes, which of the following choices describes the type of this cell and the direction of nerve impulse ?

A
B
C
D

•Which of the following neurons exist completely inside the central nervous system ?

Connector neurons only.
Motor neurons only.
Sensory and connector neurons.
Sensory and motor neurons.

•The nerve fibers that act on increasing the heart contraction are arisen from

the thoracic region of spinal cord.
the lumbar region of spinal cord.
the brain stem region.
the sacral region of spinal cord.

•The effect of sympathetic and parasympathetic nervous systems on the heart is

symmetric.
opposite to each other.
Complementary
Successive

•When the parasympathetic nervous system is activated, the digestion process is

accelerated
inhibited
stopped.
not affected.

•Contraction occurs suddenly, when a hand touches a hot surface, by the control of

spinal cord.
parietal lobe of the cerebral cortex.
involuntary muscles.
voluntary muscles.

Which choice in the following table illustrates the effect of adrenaline hormone ?

A
B
C
D

•When feeling fear, the secretion of saliva……

increases
stops
decreases
is not affected.

•The opposite figure illustrates a reflex arc with three mistakes. They can be corrected by………….

placing the direction of the cell body no. (2) at the position of finger.
placing the terminals of the cell no. (3) at the position of muscle.
placing the cell body no. (6) at the position of its terminals and vice versa
replacing the cell no. (3) with the cell no. (2).

•All the following play a role in the action of respiratory system, except the

nervous centers in medulla oblongata.
nerves between cervical and lumbar vertebrae.
Temporal lobe
nerves from brain stem.

•A 4-year-old child smells a burning flame, which accurately describes what will happen in the light of your study of the central nervous system

He will scream first then he will move his hand away from the flame because screaming is an involuntary reaction
he will move his hand away from the flame first then he will scream because moving his hand away is voluntary reaction and it will be slower
he will move his hand away from the flame first because moving his hand away is an involuntary reaction then he will scream as screaming is voluntary slower reaction
Screaming is faster reaction than moving away his hand because he is young as he couldn’t hold back the screaming

The opposite figure represents an eye of a person that was exposed to bright light, what happens to the distances (A) and (B) when he moves to a room with dim light ?

A
B
C
D

•in the cases of relaxation, the action of ……….. nervous system is activated.

sympathetic
Parasympathetic
Autonomic
peripheral

•The urinary bladder won’t contract, when a damage in the fibers of …………… occurs.

sympathetic nervous system in sacral region
parasympathetic nervous system in sacral region
sympathetic nervous system in lumbar region
parasympathetic nervous system in lumbar region

•the sympathetic nervous system increases ……

Stomach secretions
Salivary glands activity
Heartbeats
A and B

•The nerve fibers that act on increasing the salivary glands secretion are arisen from………

The thoracic region of spinal cord.
Th lumbar region of spinal cord.
the brain stem region.
the sacral region of spinal cord.

•When eating a meal containing carbohydrates and meats during watching a horror movie, the rate of digestion ……..

Increases in mouth and stomach
decreases in mouth and stomach
decreases in mouth and increases in stomach
increases in mouth and decreases in stomach

•One of the treatment methods of asthma is the effect on the nervous system, and this occurs through drugs which act on the……… (bronchial asthma is a disease characterized by narrowing of the airways)

activation of sympathetic nervous system.
inhibition of sympathetic nervous system.
activation of two types of autonomic nervous system.
inhibition of two types of autonomic nervous system.

Homework-Lecture 7

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