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BIOS 252
BIOS 252: Exam 3- Anatomy & Physiology II with Lab
(Latest Update ) Review Questions with
Verified Answers | 100% Correct | Grade A -
Chamberlain
What is the difference between sensation and perception? - ANS Sensation is the
receptor-level detection of stimuli, while perception is the conscious awareness created
by the cerebral cortex.
Can sensation occur without perception? - ANS Yes, sensation can occur without
perception if signals never reach the cerebrum.
What is sensory adaptation? - ANS A decrease in sensitivity to a constant stimulus.
What type of receptors adapt quickly? - ANS Phasic receptors adapt quickly (e.g.,
touch/vibration).
What type of receptors adapt slowly? - ANS Tonic receptors adapt slowly (e.g., pain,
proprioception).
BIOS 252
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BIOS 252
What are exteroceptors? - ANS Receptors that detect external environment stimuli such
as touch, pressure, and temperature.
What are interoceptors? - ANS Receptors that detect internal body conditions from
visceral organs.
What are proprioceptors? - ANS Receptors that detect joint position, muscle stretch,
and body orientation.
What do mechanoreceptors respond to? - ANS Pressure, vibration, and stretch.
What do thermoreceptors detect? - ANS Temperature changes.
What is the function of nociceptors? - ANS They respond to pain.
What is the visual pathway from the eye to the brain? - ANS Cornea → Aqueous humor
→ Pupil → Lens → Vitreous humor → Retina → Optic nerve → Optic chiasm → Optic
tract → Thalamus → Occipital lobe.
What are the three layers of the eye? - ANS Fibrous tunic (sclera + cornea), vascular
tunic (choroid, ciliary body, iris), and nervous tunic (retina).
What is the role of rods in the retina? - ANS Rods are responsible for dim light and
peripheral vision.
What is the role of cones in the retina? - ANS Cones are responsible for bright light,
color, and sharp vision.
BIOS 252
BIOS 252
BIOS 252: Exam 3- Anatomy & Physiology II with Lab
(Latest Update ) Review Questions with
Verified Answers | 100% Correct | Grade A -
Chamberlain
What is the difference between sensation and perception? - ANS Sensation is the
receptor-level detection of stimuli, while perception is the conscious awareness created
by the cerebral cortex.
Can sensation occur without perception? - ANS Yes, sensation can occur without
perception if signals never reach the cerebrum.
What is sensory adaptation? - ANS A decrease in sensitivity to a constant stimulus.
What type of receptors adapt quickly? - ANS Phasic receptors adapt quickly (e.g.,
touch/vibration).
What type of receptors adapt slowly? - ANS Tonic receptors adapt slowly (e.g., pain,
proprioception).
BIOS 252
, 2
BIOS 252
What are exteroceptors? - ANS Receptors that detect external environment stimuli such
as touch, pressure, and temperature.
What are interoceptors? - ANS Receptors that detect internal body conditions from
visceral organs.
What are proprioceptors? - ANS Receptors that detect joint position, muscle stretch,
and body orientation.
What do mechanoreceptors respond to? - ANS Pressure, vibration, and stretch.
What do thermoreceptors detect? - ANS Temperature changes.
What is the function of nociceptors? - ANS They respond to pain.
What is the visual pathway from the eye to the brain? - ANS Cornea → Aqueous humor
→ Pupil → Lens → Vitreous humor → Retina → Optic nerve → Optic chiasm → Optic
tract → Thalamus → Occipital lobe.
What are the three layers of the eye? - ANS Fibrous tunic (sclera + cornea), vascular
tunic (choroid, ciliary body, iris), and nervous tunic (retina).
What is the role of rods in the retina? - ANS Rods are responsible for dim light and
peripheral vision.
What is the role of cones in the retina? - ANS Cones are responsible for bright light,
color, and sharp vision.
BIOS 252
