Nervous System Pathways Jeopardy review game Needed: 3 or 4 players 1 Scorekeeper 1 watcher
Pathways Jeopardy Motor pathways Sensory pathways Visceral pathways ANS more ANS
Upper motor neuron cell bodies are located here.
Answer: Precentral gyrus, also called primary motor cortex.
The effectors of somatic pathways are _________.
Answer: Skeletal muscles
True or False: Somatic motor fibers are located in spinal nerves and cranial nerves.
Answer: true
Which is not a motor pathway? vestibulospinal spinothalamic corticobulbar corticospinal
Which is not a motor pathway? vestibulospinal spinothalamic corticobulbar corticospinal Answer: spinothalamic
This motor tract is the motor component of a reflex that corrects the position of the head.
Answer: Vestibulospinal tract
This pathway conducts sensations of subconscious proprioception.
Answer: Spinocerebellar pathwway
The destination of somatic sensory tracts is ________.
Answer: Postcentral gyrus
Third order neuron cell bodies are in the ________.
Answer: thalamus
True or False: Dorsal rami and ventral rami of spinal nerves both conduct somatic sensory impulses.
Answer:True
Conscious perception of somatic sensory impulses occurs here: _______.
Answer: Postcentral gyrus, also called primary sensory cortex
Visceral sensory pathways begin in receptors of the ________.
Answer: visceral organs / ventral cavity organs
The site of integration for visceral sensory pathways is the: __________.
Answer: Solitary nucleus
True or False: Visceral motor impulses are only conducted to organs in the ventral cavity.
True or False: Visceral motor impulses are only conducted to organs in the ventral cavity. Answer: false, they are also conducted to sweat glands, arrector pili, adipose tissue, and blood vessels.
Visceral motor neuron somas are located here: ____and here: ____.
Visceral motor neuron somas are located here: ____and here: _____. Answer: Lateral horn of spinal cord and some cranial nerve nuclei
True or False: Referred pain is perceived when a visceral sensory pathway stimulates a spinothalamic pathway.
Answer: True
Name the four autonomic effectors.
Answer: Smooth muscle, cardiac muscle, glands, adipose tissue
Intramural ganglia are located along some of the pathways of the _______ division of the ANS.
Answer: parasympathetic
Sympathetic impulses to the body wall and limbs synapse in _________ ganglia.
Answer: sympathetic chain
True or false: Autonomic ganglionic fibers always secrete acetylcholine.
Answer: false, other neurotransmitters include NE and NO
Nicotinic Ach receptors are found at excitatory synapses in autonomic ________.
Answer: ganglia
True or false: Dual innervation means an effector is innervated by both the somatic and autonomic nervous systems.
Answer: false, it means the effector is innervated by both ANS divisions. (SYM and PARA)
True or False: Sympathetic nerves innervate all sympathetic effectors.
Answer: False, they innervate thoracic cavity effectors; splanchnic nerves innervate abdominopelvic viscera, and spinal nerves innervate effectors in the body wall and limbs.
True or False: The suprarenal medullae are dually innervated and secrete NE and EPI in response to ANS activity.
Answer: False, they are only innervated by the sympathetic division.
The amount of COMT and MAO (the enzymes that breakdown NE) are in ____ concentrations in most tissues.
Answer: low
True or false: Alpha ( ) and beta ( ) receptors exert their effects on effectors by increasing membrane permeability to sodium.
Answer: False, via cAMP or activating intracellular enzymes.