Page 103 - 84 human physiolofy part-1

Senses

the ground while outward. Finally it
making a loud will bring the arms in mother.
sound. toward its body
Place the finger in This prepares
Palmar baby's palm and The baby will infant for
immediately grasp the 3 to 4 months
grasp press against the finger. voluntary
palm. grasping.
This will cause the
Turn the baby's baby to extend one This may
head to one side arm in front of its eye prepare for
Tonic neck 4 months
while the baby is or to the side to which voluntary
awake. the head has been reaching.
turned.

2 months (this applies
Hold the baby under to a baby who has This prepares
the arm and permit The baby will lift one gained weight. For the baby for
Stepping the bare feet of the foot after the other in baby who is not as voluntary
baby to touch a flat a stepping fashion. heavy, this reflex may walking.
surface.
be submissive.)

Touch the foot in a The baby's toes will
stroking manner
Babinski fan out and curl as the 8 to 12 months Unknown
form the toe toward foot twists inward.
the heel.

Review Questions

1. Located under the hardest bone in the body, these control not only hearing but also a sense of
gravity and motion:

A) The incus and the stapes
B) The pinna and the ear drum
C) the vestibular nerve and the semi circular canals
D) The eustachian tube and the stapes

2. The retina does the following;

A) allows vision in light and dark, using cones and rods
B) Gives depth perception using binocular vision
C) Contains the ciliary muscles that control the shape of the lens
D) Protects and supports the shape of the eye

3. This is the reason that we stop feeling the clothes that we are wearing

A) Merkel’s Discs are somewhat rigid in structure, and the fact that they are not encapsulated,
causes them to have a sustained response
B) Meissner’s corpuscle are rapidly adapting or phasic, the action potentials generated quickly

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