Sympathetic nervous system induces
heart beat
secretion of digestive juices
secretion of saliva
All of the above
Which one of the following statements is correct?
Neurons regulate endocrine activity, but not vice versa
Endocrine glands regulate neural activity and nervous system regulates endocrine glands
Neither hormones control neural activity nor the neurons control endocrine activity
Endocrine glands regulate neural activity, but now vice versa
Which part of human brain is concerned with the regulation of body temperature?
Medulla oblongata
Cerebellum
Cerebrum
Hypothalamus
In humans, visceral organs are innervated by
sympathetic nerves and are under conscious control
parasympathetic nerves and are under conscious control
Both (a) and (b)
both sympathetic and parasympathetic nerves but are not under conscious control
Retina is most sensitive at
optic disc
periphery
macula lutea
fovea centralis
Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter
acetylcholine
norepinephrine
dopamine
GABA
CNS is mostly made of
motor neurons and sensory neurons
sensory neurons and association neurons
association neurons
motor neurons and association neurons
Sensitive pigmented layer of eye is
cornea
retina
sclerotic
iris
Which of the following statements is correct about node of Ranvier?
Axolemma is discontinuous
Myelin sheath is discontinuous
Both neurilemma and myelin sheath are discontinuous
Covered by myelin sheath
Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?
Perikaryon and dendrites
Vacuoles and fibres
Flagellum and medullary sheath
Nucleus and mitochondria
