Physio-Neurophysiology Quiz 2

Visual acuity

The first step occurs when lights falls on retina

The parvocellular pathway from lateral geniculate nucleus to visual cortex is most sensitive for the stimulus of

Visual accommodation involves

Vitamin A is the precursor for the synthesis of

Fiber A activated, excites further 120 fibers, fiber B activated alone excites 60 fibers, if both fiber A and B activated, 120 fibers excited, this is called

Preganglionic fibers for constrictor papillae lie in

If accomoation reflex remains intact and light reflex is absent, where will be damaged

Olfactory area is present in

Regarding olfaction

Unilateral anosmia is due to

Kallman syndrome

The direction of nystagmus is vertical when a subject is rotated

When the damage to outer hair cells is greater than inner hair cells

Primary auditory cortex lies in which lobe

Bilateral destruction of auditory cortex leads to

Bitter taste is mediated by action of

Which one decrease the muscle length

Stretch reflex maintains

Which of the following informs about tension developed in the muscle

Spaciticity in mid-collicular decrebrate lesion is lest likely due to

Which of the fallowing is fast neuron

Initiation of nerve impulse occurs at the axon hillock because

With which one of the following lesion is associated with lower motor neuron lesions a

Gamma neurons innervate

In a motor nerve fiber, lowest threshold potential is seen in

Which of the following is true regarding bainbridge reflex

Crossed extensor reflex is a

Withdrawal reflex are not

Fast pain mediated by which fibers

Preganglionic sympathetic fibres are

Slow pain involves all except

IPSP is generated by opening of

Sustained rhythmic reflex tremors induce by sudden movements is

The structure which prevents muscle from tearing under a constant pressure

Regarding Golgi tendon organ, it

Which of the following is totally dependent on glucose as a source of energy

During walking painful stimuli causes flexion of the leg. It is due to

Fastest conduction occurs in

Free nerve endings are

Autonomic fibers are

Unmyelinated nociceptive primary afferent nerve fiber travel through

Following is true regarding muscle spindle

In vigorous muscle contraction, damage to the muscle is protected by

All of the following regarding golgi tendon organ are true except

Satiety center is located in which part of hypothalamus

Function of limic system are all of the following except

For circardian rhythm optic nerve sends fibers to

Lesion of mamillary body causes

Primary motor area for shivering is

Lymbic system is the seat of

Which is not the part of limbic system

A patient has pituitary tumor. In addition to blindness from compression of optic chiasma. It has also eroded lower part of hypo thalamus. Which of the following will result from hypothalamus lesion

Excitation of posterior hypothalamus would cause

Limbic system does not affect

At onset of puberty what happens

The sign of cerebellar disease is

Feature of cerebellar disorder is

Pendulous knee jerk occurs in

Lesions of the lateral cerebellum cause all of the following except

Pheromones are

The part of basal nuclei is

Patient presents with resting tremors, rigidity and hypokinesia. Lesion is in

Hemibalismus occur due to damage to

Which of the following is the switch of a single motor unit

A primary function of basal ganglia is

Parkinsonism feature is

Cerebral cortex

Lesion in the Broac’s area causes which of the following

A fluent aphasia is lesion of

Babinski’s sign -ve in

Motor aphasia due to lesion of

Damage to dorsal column tract causes ipsilateral loss of

Fine voluntary skilled movements of upper extremities are conducted by

Broca’s area of speech is located in