The _____ acts to keep one aroused and awake.
1. vasomotor center
2. corpora quadrigemina
3. diencephalon
4. reticular formation

Subtopic:  Hind & Mid Brain |
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Five events in the transmission of nerve impulse across the synapse -

A. Opening of specific ion channels allows the entry of ions, a new action potential is generated in the post-synaptic neuron
B. Neurotransmitter binds to the receptor on post-synaptic membrane.
C. Synaptic vesicle fuses with pre-synaptic membrane, neurotransmitter releases into synaptic cleft
D. Depolarization of pre-synaptic membrane
E. Arrival of an action potential at the axon terminal

In which sequence do these events occur?

1. E D C B A
2. A B C D E
3. A B D C E
4. E D C A B

Subtopic:  Action Potential |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Mark the correct statement:

1. Electrical synapses are more common in our neural system than chemical synapses.
2. The new potential in the post-synaptic neurons may be either excitatory or inhibitory.
3. Hypothalamus is the major coordination centre for sensory and motor signaling.
4. The tracts of nerve fibres that connect two cerebral hemispheres are called corpora bigemina.
Subtopic:  Synapse |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Go through the following characterization of Sympathetic and. Parasympathetic Nervous System.
I. Dilates pupil,
II.  Heart rate, BP (Vasoconstriction)  Glycogenolysis, dilates bronchi.
III. Constricts pupil.
IV. Induces ejaculation.
V. Gastric secretion,  salivary secretion, peristalsis.
VI. Erection and urination.
1. Sympathetic - III, V, VI; Parasympathetic - I, II, IV
2. Sympathetic - I, II, IV; Parasympathetic - III, V, VI
3. Sympathetic M II, IV, VI; Parasympathetic - I, III, V
4. Sympathetic - I, III, V; Parasympathetic - II, IV, VI

Subtopic:  Autonomic Nervous System: 2 (OLD NCERT) | Autonomic Nervous System (OLD NCERT) |
 79%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints

Human body temperature is regulated by the centre located in:

1. Cerebrum                 

2. Cerebellum

3. Medulla                   

4. Hypothalamus

Subtopic:  Diencephalon |
 93%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In the human eye, there are three types of cones – red, blue, and green. When these cones are stimulated equally, a sensation for which of the following colors would be produced?
1. White
2. Black
3. Orange
4. Yellow

Subtopic:  Human Eye: Adaptation (OLD NCERT) |
 90%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The vomiting center in the humans is located in the:
1. Medulla oblongata
2. Pons varolii
3. Hypothalamus
4. Thalamus

Subtopic:  Hind & Mid Brain |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Most of the neurons in the cerebral cortex are:

1. Unipolar

2. Bipolar

3. Multipolar

4. Pseudo unipolar

Subtopic:  Nervous System |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The number of correct statements amongst the given statements is:

I. Somatic neural system relays impulses from the CNS to smooth muscles of the body.

II. Myelinated nerve fibers are found in spinal nerves but not in cranial nerves.

III. Sodium-potassium pump transports 3 sodium outwards and 2 potassium into the cell.

IV. Electrical synapses are rare in our system.

V. Efferent neurons carry signals from the CNS to the effector.

   1.  2         

   2.  3

   3.  4         

   4.  5

Subtopic:  Nervous System | Synapse |
 68%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

In the given diagram of cochlea, the tectorial membrane is represented by the letter:

                       

            1.  A                   

            2.  B

            3.  C                 

            4.  D

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch