Nervous|Sensory Flashcards
(60 cards)
Which of the following is controlled by the cerebellum?
memorizing a poem
reading a story
adding numbers
walking on a balance beam
walking on a balance beam
If a neuron has damaged synapses, what would be impaired?
Ability to recharge electrical signals
Receiving signals from other neurons
Speed of signal transduction
Integration of signals from several synapses
Receiving signals from other neurons
The protective covering of an entire nerve is the
Epineurium
Which part of the Nervous System relays information to the skeletal muscles?
Somatic NS
All of the following are functions of the nervous system EXCEPT for
Receives information from the environment
Distributes food to the brain
Controls the activities of the body
Coordinates the actions in the body
Distributes food to the brain
What happens to the stimulus that is received by the sense organs?
It is absorbed by the cerebrum
It is changed to impulse
It is changed to neurons
It becomes part of the spinal cord
It is changed to impulse
The language/signal of a neuron is called
action potential or nerve impulse
The compound eyes in honeybees & complex eyes in squids & octopuses contain ______ that are sensitive to light.
Photoreceptors
Which is/are NOT (a) part/s of the meninges that serves as protective membranous layers for brain & spinal cord?
Arachnoid mater
Pia mater
Gray & White matter
Dura mater
Gray & White matter
If the sensory-somatic nervous system of an animal is damaged, what might happen?
Decreased digestion ability
Perpetually low heart rate
Impaired control of motor movements
Enhanced processing of environmental information
Impaired control of motor movements
Which is a function of the myelin sheath found on myelinated neurons?
To insulate them
Which part of the nervous system directly controls the digestive system?
Parasympathetic nervous system
The cells within the nervous system that transmit action potentials are
Neurons
These are bundles of neuronal or nerve fibers in the peripheral nervous system
Nerves
Chemical messengers that transmit Information between neurons are called
Neurotransmitters
Activation of the sympathetic nervous system causes
increased blood flow to the skin
an increased heart rate
a decreased heart rate
increased digestion
an increased heart rate
Action potentials pass from one neuron to another at a microscopic gap, called a synapse, where they trigger release of chemical signal molecules, called
neurotransmitters
Consists of cells that can convert environmental information (stimuli) to nerve impulses.
Sensory receptors
Which of the following statements about the parasympathetic nervous system is true?
controls fight or flight response
transmits information from the skin to the central nervous system
can reset organ function to the normal range
stimulates glycogen breakdown
can reset organ function to the normal range
Which statement is FALSE?
The white matter region of the brain & spinal cord comprises myelinated axons.
Myelination insulates axons.
The gray matter of the brain is found in the outer shell surface.
Myelination increases speed of nerve impulse.
The white matter of the spinal cord is found in the H-shaped inner core
The white matter of the spinal cord is found in the H-shaped inner core
Which is NOT found in the gray matter region of the brain & spinal cord?
myelinated axons
unmyelinated axons & axon terminals
nerve cell bodies
myelinated axons
Which part of the Nervous System enables you to act quickly in times of stress or emergency?
SYMPATHETIC NERVOUS SYSTEM
Which of the following structures is a part of the rhombencephalon?
Temporal lobe
Medulla
Substantia nigra
Thalamus
Medulla
The “information highway” of the central nervous system that links the brain to the rest of the body.
Spinal cord
