Multiple Sclerosis (MS) is a result of the degeneration in: A)dendrite B)axon C)myelin sheath D)soma E)none of the above
myelin sheath
100
What six subsystems make up the Nervous system?
central, peripheral, somatic, autonomic, sympathetic, and parasympathetic
100
__________ are chemical messengers released into the ______________.
hormones; bloodstream
200
Influences movement, learning, attention, and emotion
Dopamine
200
What is the level of stimulation required to trigger a neural impulse called?
The threshold
200
Which neurotransmitter inhibits CNS activity in order to calm a person down during stressful or arousing situations?
A) GABA B)Norepinephrine C)AcH D)dopamine E)Serotonin
Norepinephrine
200
The neurons carry outgoing information from the brain to the spinal cord to the muscles and glands. Efferent or Afferent?
Efferent
200
Which gland is responsible for secreting melatonin and cortisol?
pineal
300
An agonist is a molecule that _____________ a response. An antagonist is a molecule that ______________ a response.
Stimulates and inhibits
300
What are the three phases of neural communication?
action potential, refractory period, resting period
300
George does not feel like getting out of bed, has lost his appetite, and feels tired for most of the day. Which of the following neurotransmitters likely is in short supply for George?
Serotonin
300
The _________________ nervous system is responsible for bringing the body back to homeostasis
parasympathetic
300
This gland is responsible for regulating the level of calcium in the blood
Parathyroid
400
An oversupply of GABA is linked to seizures, tremors, and insomnia. True OR False?
False
400
What two ions are transported inside and outside of the axon membrane during an action potential?
Sodium and Potassium (salty banana)
400
When there is a negative charge inside an axon and a positive charge outside, the neuron is said to have a resting potential. TRUE or FALSE?
FALSE
400
Label these neurons
Interneuron, Sensory, and Motor
400
The pituitary gland is part of which collection of brain structures?
Limbic system
500
An oversupply of this neurotransmitter can overstimulate the brain, producing migraines or seizures.
Glutamate
500
A neural impulse travels at speeds ranging from _______ to ____________ miles per hour (mph)
2-180
500
In the early 1800s, the study of ________________ says that bumps on the brain could reveal a person's mental abilities and character traits.
phrenology
500
The hypothalamus is controlled by this subsystem.
Autonomic
500
This gland is responsible to generating t-cells to keep the immune system strong