The actual receptors for hearing and balance are the _____.
1. mechanoreceptors
2. otoliths
3. cochlear cells
4. hair cells
The _____ acts to keep one aroused and awake.
1. vasomotor center
2. corpora quadrigemina
3. diencephalon
4. reticular formation
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
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. |
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
Human body temperature is regulated by the centre located in:
1. Cerebrum
2. Cerebellum
3. Medulla
4. Hypothalamus
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
The vomiting center in the humans is located in the:
1. Medulla oblongata
2. Pons varolii
3. Hypothalamus
4. Thalamus
Most of the neurons in the cerebral cortex are:
1. Unipolar
2. Bipolar
3. Multipolar
4. Pseudo unipolar
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