Daily Exam 04, Week 04 (Clavicle)

1. The Myelin sheath of PNS is derived from the

Microglia

Neuroglial cells

Schwann cells

Nerve cells

2. Neurotransmitters can inhibit or excite neurons. _________ for example, is inhibitory whereas __________ is excitatory

Serotonin; dopamine

Glutamate; GABA

GABA; glutamate

None of these

3. An injury sustained by the hypothalamus is most likely to interrupt

Coordination during locomotion

Short term memory

executive function like decision making

Regulation of body temperature

4. This part of the human brain is also known as the emotional brain

Limbic system

Epithalamus

Broca’s area

Corpus callosum

5. This statement is not associated with midbrain

Hindbrain and midbrain constitute the brain stem

The canal called cerebral aqueduct passes through the midbrain

Located between thalamus of the forebrain and pons of the hindbrain

The ventral portion of the midbrain is composed of mainly four, round swellings known as corpora quadrigemina

6. Which of these functions will be affected if the medulla oblongata is damaged?

Tactile sensation – response when prickled with a needle

Memory

Thermoregulation

Vision

7.How do neurons communicate with one another?

Electrically

Chemically

A and B

Through weak, radio-wave-like impulses

8.Acetylcholine is a neurotransmitter that provides for communication between muscles and nerves. When there is a problem with the interaction between acetylcholine and the acetylcholine receptor sites on the muscles, which condition(s) can occur?

Myasthenia gravis

Botulism

Multiple sclerosis

Parkinson’s disease

9. The basal ganglia comprise-

the amygdala, hippocampus and cingulated gyrus

The caudate, putamen and globus pallidus

the inferior and superior colliculi

the thalamus and hypothalamus

10. Which of the following is NOT a function of cerebrospinal fluid:

To improve conduction of nerve signals between different brain regions

to exchange nutrients and metabolic waste

To provide mechanical protection to the brain

To carry neuroactive hormones in the nervous system

11. Broca’s area is located in

the parietal lobe

. The frontal lobe

C. The temporal lobe

D. The occipital lobe

12. Sensations from the skin are converted to perceptions in which part of the cerebrum?

The primary sensory area

The primary motor area

Wernicke's area

Broca’s area

13. Damage to the cerebellum causes

Loss of balance

Loss of speech

Coma.

Uncontrollable hunger

14. Which of the following releases norepinephrine as a neurotransmitter?

Preganglionic sympathetic neurons

Postganglionic sympathetic neurons

Preganglionic parasympathetic neurons

Postganglionic parasympathetic neuron

15. This brain area is a routing center for incoming sense signals

Thalamus

Cerebellum

Brain stem

Spinal cord

16. A nociceptor is a type of _____ receptor.

A) mechano

B) photo

C) chemo

D) pain

17. Which of the following is the first to come into contact with light?

A) ganglion cells

B) rods

C) bipolar neurons

D) cones

19. Which nerve fibre is motor to muscle spindle

Alpha A

Beta A

Gamma A

20. Properties of reflex action includes all except:

accommodation

Irradiation

Facilitation

Subliminal fringe

22. Which acts as scavenger cell ?

Astrocytes

Microglia

Oligodendrocytes

Tanycytes

23. Which factor decreases conduction of nerve impulses ?

Lack of Ca++

Increasing temperature

More thickness of nerve fibre

Increased Na+

24. Properties of reflex action not -

Summation

Rebound phenomenon

Reflexive innervation

Sensitization

25. Referred pain conducted by-

C fibre

Delta fibre

B fibre

Beta fibre

Daily Exam 04, Week 04 (Clavicle)

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