Gen Sci Ch 28 Question Preview (ID: 47135)
Human Body.
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Which part of the brain is responsible for reasoning, controlling voluntary movements, collecting info from senses, and understanding language?
a) brainstem
b) cerebellum
c) cerebrum
d) hypothalamus
Which part of the brain controls balance, posture, coordination, and fine movements?
a) brainstem
b) cerebellum
c) cerebrum
d) hypothalamus
Your central nervous system is composed of
a) the brain and spinal cord
b) all other nerves in your body
c) just the nerves in your hands and feet
d) your blood vessels, heart, and lungs
Neurons that carry information from the senses to the central nervous system are called
a) motor neurons
b) messenger neurons
c) interneurons
d) sensory neurons
What kind of motor neurons control voluntary actions
a) somatic nervous system
b) autonomic nervous system
c) sympathetic nervous system
d) parasympathetic nervous system
Some neurons have a(n) ___ wrapped around their axons to allow action potentials to move faster down the axon.
a) nucleus
b) myelin sheath
c) amnion
d) dendrite
Which is true about electrical synapses
a) channels connect the neuron to a target cell
b) they are very fast
c) they release neurotransmitters
d) both channels and fast
Proteins made by the brain in times of stress or pain are called
a) hormones
b) neurons
c) endorphins
d) sperm
The __ funnels sound waves into your ear.
a) pinna
b) organ of Corti
c) eardrum
d) cochlea
Pressure, temperature, and pain sensors are all involved in your sense of
a) sight
b) hearing
c) touch
d) smell
Which other sense tells you about body rotation, movement, and which way is up?
a) proprioreceptors
b) vestibular senses
c) conception
d) this end up sense
Which kind of hormones cross the cell membrane and bind to receptors inside target cells?
a) protein hormones
b) steroid hormones
c) neurotransmitter hormones
d) vestigial organs
Once an egg is fertilized, where does it go?
a) the oviduct
b) the uterus
c) the ovaries
d) the testes
Which is NOT true about muscles?
a) muscles can push and pull
b) muscles move when myosin heads attach to actin filament and pull
c) muscles often work in pairs
d) all of the above
Light first enters our eyes through a tough, transparent layer called the
a) cornea
b) iris
c) lens
d) retina
A signal from a neuron, occurring when the neuron's membrane potential becomes positive
a) action potential
b) chemoreception
c) fertilization
d) ovulation
The release of a mature egg cell that occurs once during each menstrual cycle
a) fertilization
b) chemoreception
c) ovulation
d) synapse
A cell that transmits electric signals from one part of the body to another
a) action potential
b) neuron
c) organ
d) tissue
a group of similar cells that performs a certain function
a) tissue
b) organ
c) organ system
d) ovule
A connection between a neuron and a target cell
a) synapse
b) fertilization
c) neuron
d) dendrite
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