2017 Mod16 Flashcards
Define the following terms:
A. Autonomic nervous system
The system of nerves that carries instructions from the CNS to the body’s smooth muscles, cardiac muscles, and glands
B. Sensory nervous system
The system of nerves that carries information from the body’s receptors to the CNS
C. Somatic motor nervous system
The system of nerves that carries instructions from the CNS to the skeletal muscles
What are the two main types of cells in the human nervous system
Neurons and neuroglia
Identifying the structures pointed out in this diagram of a neuron
A. Dendriles B. Nucleus C. Cell body D. Axon E. Myelin sheath
What do dendrite do?
They carry electrical signals toward the cell body
What do axons do?
Carrie electrical signals away from the cell body
What is a synapse?
It is the gap between neurons
Explain how a signal crosses the axon of a neuron to the receiving cell
“Changes frequency”
What is the function of a neuroglia
It support neurons and helps them communicate
A nerve runs down the leg to and from the foot. is it part of this PNS or the CNS?
PNS
What do you mean structures make up the CNS?
The brain and spinal cord
What two things discussed in this module protect the brain?
The skull, cerebrospinal fluid
What protects the spinal cord?
The back bone.
What is the brain’s gray matter composed of?
Neurons
What is the brain’s of white matter composed of?
Axons
What is the function of my corpus callosum
It allows the two halfs of the brain to communicate
What does the cerebellum primarily control?
Skeletal muscle movement
What part of the brain deals mostly with higher-level thinking skills?
The cerebrum
Do you the two sides of the brain do exactly the same things?
No
What side of the PNS does the left side of the brain control
The right side of course.;)
What is the blood brain barrier and why is it important?
It is a special filter to protect the brain
What does the sympathetic division of the autonomic nervous system do?
It increases the heart rate and add more glucose to the blood
What does the parasympathetic division of the autonomic nervous system do
It lowers the heart rate and makes the stomach churn
