Spinal Nerves
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Choose the correct sequence of nerves in the spinal cord.
Cervical nerves ⇒Thoracic nerves ⇒ Sacral nerves ⇒ Lumbar nerves
Thoracic nerves ⇒ Cervical nerves ⇒ Lumbar nerves ⇒ Sacral nerves
Cervical nerves ⇒ Thoracic nerves ⇒ Lumbar nerves ⇒ Sacral nerves
Thoracic nerves ⇒ Cervical nerves ⇒ Sacral nerves ⇒ Lumbar nerves
Lateral line system is present in–
Frog
Man
Reptiles
Fish
Which one of the following characters is not typical of the class Mammalia?
Ten pairs of cranial nerves
Seven cervical vertebrae
Thecodont dentition
Alveolar lungs
Distinguish between:
(a) afferent neurons and efferent neurons
(b) impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre
(c) aqueous humor and vitreous humor
(d) blind spot and yellow spot
(f) cranial nerves and spinal nerves.
_____ pairs of spinal nerves are present in the human spinal cord.
32
31
30
34
Differentiate between:
(a) Myelinated and non-myelinated axons
(b) Dendrites and axons
(c) Rods and cones
(d) Thalamus and Hypothalamus
(e) Cerebrum and Cerebellum
The peripheral nervous system consists of :
Cranial nerves only
Spinal nerves only
Cranial and Spinal nerves
Brain and Spinal cord