3. Pain sensation

Thermo-sensitive pain receptors:

Mainly distributed in the skin & connected to thin myelinated A delta fibers

What is the only monosynaptic reflex?

The stretch reflex

What is the afferent innervation in stretch muscle reflex?

Thick myelinated fibers A

Hypertonia happens in:

UMNL → clasp-knife sapsticity

Parkinsonism → lead-pipe rigidity

Hypotonia seen in:

LMNL & Neocerebellar syndrome

Triceps reflex centers

C6 & C7

Area of representation is related to

the function (degree of skilled movement) & not the size of the part.

Premotor VS motor area: which ones have Betz cells?

Motor area 4 has Betz cells

What is the word formation area called?

Broca’s area (44 & 45)

Origin of the Corticospinal tract:

1. Motor area 4

2. Premotor area 6

3. From cells present in somatosensory I & II