Test 4 Flashcards
(40 cards)
the purpose of the brain is to __________
control behavior, movements, see, and hear
a great brain without muscles would be like a computer without a monitor, printer, or other output. No matter how powerful the internal processing, it would be useless
true
smooth muscle found in the intestines are consists of _______
long, thin cells
whereas skeletal, or striated, muscle consists of ______
long cylindrical fibers with stripes
a _______ is a synapse between a motor neuron axon and a muscle fiber
neuromuscular junction
movements can be more precise where each axon innervates only a _____
few fibers
movement requires the alternating contraction of opposing sets of muscles called ____
antagonistic muscles
we rely on our slow-twitch and intermediate fibers for activities such as ____________. Choose all correct answers
- talk
- walk
whereas fast-twitch fibers are adapted for _____
speed, sprinting, running
receptors that detect the position or movement of a part of the body are called _____
proprioceptors
the ____________ keeps track of the position of the body relative to the world
posterior parietal cortex
the __________ integrates information about the position and posture of the body; organizes the direction of the movement in space
premotor cortex
the ________ is active during a delay before movement and stores sensory information relative to a movement
prefrontal cortex
the _________ organizes rapid sequence of movements in a specific order
supplementary motor cortex
the ___________ is a structure in the brain often associated with balance and coordination
cerebellum
there are more neurons in the ________ than in all other _______ areas combined
cerebellum/brain
the _______ is a group of large subcortical structures in the forebrain
basal ganglia
a movement disorder characterized by muscle tremors, rigidity, slow movements, and difficulty initiating physical and mental activity is called ______
Parkinson’s disease
whereas the ____________ is a neurological disorder characterized by various motors symptoms
Huntington’s disease
the drug ________ is the primary treatment for Parkinson’s
L-dopa
brain disorders, such as Parkinson’s disease and Huntington’s disease not only affect movement, but also impair mood, memory, and cognition
true
mammals have circadian rhythms ____
for a variety of activities, including sleep
the purpose of the circadian rhythm is to keep our internal workings in phase with the _____
outside world
wxorking at night does not reliably change the circadian rhythm
true
