Bio 253 exam 2 UPDATED ACTUAL Exam
Questions and CORRECT Answers
What does a central nervous system consists of - CORRECT ANSWER - Brain and spinal
cord
What is the function of the CNS - CORRECT ANSWER - Integrated control center
What does a pns consist of - CORRECT ANSWER - Cranial and spinal nerves
What is the function of the pns - CORRECT ANSWER - Communication lines between
CNS and the rest of the body
What sends impulses to The pns - CORRECT ANSWER - Sensory division (afferent)
What sends impulses from CNS to effector (muscles or glands) - CORRECT ANSWER -
...efferent
Autonomic nervous system - CORRECT ANSWER - Involuntary (viseral motor)
Conducts impulses from CNS to cardiac muscles smooth muscles and glands
Somatic nervous system - CORRECT ANSWER - Voluntary
Conducts impulses from CNS to skeletal muscle
Local potential (receptor potential) what does it do - CORRECT ANSWER - Stimulates
gated sodium ion channel
, What do you need to do for stimulated gates to open - CORRECT ANSWER - Cell needs
to reach threshold
Can you simulate neuron during absolute refractory period or hyperpolarization - CORRECT
ANSWER - No
Can you simulate neuron during relative refractory time - CORRECT ANSWER - Yes but
you need a powerful stimulus
Refractory period - CORRECT ANSWER - During depolarization sodium ions go inside
During repolarization potassium leaves
Hyperpolarization needs to be fixed by an exchange and ions so it can rest
What is a cell like at rest - CORRECT ANSWER - Sodium on the outside and potassium
inside
Layers of the external ear - CORRECT ANSWER - Auricle or pinna
External acoustic meatus
Temporal bone
Middle ear structure - CORRECT ANSWER - Tympanic membrane
Malleus, incus ,stapes (the 3 ear ossicles)
Auditory tube
Inner ear structure - CORRECT ANSWER - Semicircular canals
Cochlea
Vesible
Questions and CORRECT Answers
What does a central nervous system consists of - CORRECT ANSWER - Brain and spinal
cord
What is the function of the CNS - CORRECT ANSWER - Integrated control center
What does a pns consist of - CORRECT ANSWER - Cranial and spinal nerves
What is the function of the pns - CORRECT ANSWER - Communication lines between
CNS and the rest of the body
What sends impulses to The pns - CORRECT ANSWER - Sensory division (afferent)
What sends impulses from CNS to effector (muscles or glands) - CORRECT ANSWER -
...efferent
Autonomic nervous system - CORRECT ANSWER - Involuntary (viseral motor)
Conducts impulses from CNS to cardiac muscles smooth muscles and glands
Somatic nervous system - CORRECT ANSWER - Voluntary
Conducts impulses from CNS to skeletal muscle
Local potential (receptor potential) what does it do - CORRECT ANSWER - Stimulates
gated sodium ion channel
, What do you need to do for stimulated gates to open - CORRECT ANSWER - Cell needs
to reach threshold
Can you simulate neuron during absolute refractory period or hyperpolarization - CORRECT
ANSWER - No
Can you simulate neuron during relative refractory time - CORRECT ANSWER - Yes but
you need a powerful stimulus
Refractory period - CORRECT ANSWER - During depolarization sodium ions go inside
During repolarization potassium leaves
Hyperpolarization needs to be fixed by an exchange and ions so it can rest
What is a cell like at rest - CORRECT ANSWER - Sodium on the outside and potassium
inside
Layers of the external ear - CORRECT ANSWER - Auricle or pinna
External acoustic meatus
Temporal bone
Middle ear structure - CORRECT ANSWER - Tympanic membrane
Malleus, incus ,stapes (the 3 ear ossicles)
Auditory tube
Inner ear structure - CORRECT ANSWER - Semicircular canals
Cochlea
Vesible
