Chapter 9
This is the functional unit of a muscle fiber
the sarcomere
The area of a neuron that receives the message is?
Dendrite
True or False: The spinal cord is part of the peripheral nervous system (PNS)
False. It is part of the CNS along with the brain
what you see out of your right eye is processed on which side of the brain?
left
true or false: Myosin filaments slide along actin filaments?
FALSE! Actin does the sliding along myosin
This cell type is part of the PNS and is responsible for myelinating axons.
Schwann cells
This is the name for the middle most meninx?
Hint: Meninx is the singular of meninge
Arachnoid mater
this lobe is the last to fully develop. Is associated with decision making and judging of consequences. This is why the legal age to drink is 21.
Frontal
The neurotransmitter acetylcholine is released into the synapse at the neuromuscular junction. How is it removed?
By the enzyme acetylcholinasterase
The resting cell membrane has what charge?
-70 mV
where is cerebral spinal fluid produced?
in choroid plexuses of the ventricles
It's an hour after the Thanksgiving meal, you're sitting on the couch with your family and friends watching football. Which division of the autonomic nervous system is most active?
Parasympathetic- "rest and digest"
Kate sprinted and then got a burning muscle cramp in the muscles of her calf. This is due to a buildup of what?
Lactic Acid
When the membrane potential increases, the cell is...
depolarized
True or false: the Grey matter is on the inside of the spinal cord and white matter is on the outside.
True!
John was shot in the arm and the bullet hit the ulna, shattering it. The bone fragments severed the ulnar nerve. Can this nerve regenerate?
Yes! The axon is a myelinated part of the PNS so it has the potential to
A _________ is a bundle of muscle fibers
Fascicle
This gap in the myelin sheath act like a power boost you might find in a video game?
Node of Ranvier
In the video the patient had a stroke and was able to speak, but the words that came out made no sense. What brain area was damaged?
Wernicke's area
Why is levadopa administered to patients with Parkinson's disease?
It is a precursor to dopamine and is able to cross the blood brain barrier which dopamine cannot