Flashcards in Chapter 12 Deck (33)
Increases most metabolic rates.
Which neurons are classified by function?
Nerves atatched to the brain
Nerves atatched to spinal cord
Includes all the neural tissue in the body
Has cytoplasm around nucleus
Fingerlike extensions of axon that leads to synaptic knob
Carry impulses from CNS to peripheral nerves
Types of sensory neurons
Is the round area at the end of neuron where vesicles are located
Form a myelin sheath around every peripheral axon
Highly branched processes that stick out fro the nerve body
Thickened region between body and axon
Carries information from CNS to peripheral effectors
Has the synaptic terminal and sends a message
________ neurons provide information about the external environment in forms of touch, temperature, sight, smell, and hearing.
In this classification of neurons, cell body is located between one dendrite and one axon.
Is the synapse between a neuron and a gland
Neuro glandular junction
Functions of astrocytes? (3)
-Maintains blood brain barrier
-Creates a framework for CNS
-Controls interstitial environment by regulating ions, CO2 and other nutrients
Neuroglia is found where?
PNS and CNS
__________ is found in CNS; important in attention disorders and emotional states.
Decreases most metabolic rates; slows body down.
Is gray area; clusters of rough endoplasmic reticulum and fixed ribosomes.
Cell membrane of axon
Is found in brain and CNS; may have either excitatory or inhibitory effect
Block the breakdown of ACH by acetylcholinesterase, which produces a long constant contraction.
Forms cytoskeleton of cell
Neurofilaments and neurotubules
Has slinder extensions but bodies are smaller than astrocytes and can myelinate up to 50 axons in a bundle
If damage occurs to a nerve in PNS, then schqann cells repair nerve using _________________