Anatomy Test 3 Ch. 18

Somatic Nervous System (SNS)

includes processes that are perceived or controlled consciously (involves cerebral cortex)

Somatic Sensory

detect stimuli from special senses, skin, proprioceptors

Somatic Motor

initiates motor commands to skeletal muscles

Autonomic Nervous System (ANS)

(visceral nervous system)- includes process that occur below the conscious level and without our awareness

Maintains homeostasis

regulates physiological processes that must be maintained to keep body alive- HR, BP, temp, respiratory rate, sweating, digestion, thirst

Visceral Sensory

detects stimuli from blood vessels & internal organs

Autonomic (visceral) Motor

initiates motor commands to cardiac, smooth muscle, & glands

SNS

conscious (SNS or ANS)?

SNS

sensory input- special senses, skin, proprioceptors (SNS or ANS)?

SNS

effectors- skeletal muscles (SNS or ANS)?

SNS

of lower motor neurons in pathway- 1 neuron, CNS→effector (SNS or ANS)?

SNS

axon properties- myelinated with thick diameter

SNS

fast nerve impulses (SNS or ANS)?

SNS

neurotransmitter released- acetylcholine, ACh (SNS or ANS)?

SNS

response of effector- excitation only (SNS or ANS)?

ANS

not conscious (SNS or ANS)?

ANS

sensory input- visceral senses (SNS or ANS)?

ANS

effectors- cardiac & smooth muscle, glands (SNS or ANS)?

ANS

of lower motor neurons in pathway- 2 neurons (preganglionic neuron- CNS → autonomic ganglion, postganglionic neuron- autonomic ganglion → effector) (SNS or ANS)?

ANS

preganglionic axon- myelinated, thin diameter, postganglionic axon- unmyelinated, thinner diameter, slow nerve impulse (SNS or ANS)?

ANS

neurotransmitter released- preganglionic- ACh, postganglionic- ACh or NE (SNS or ANS)?

ANS

response of effector- either excitation or inhibition (SNS or ANS)?

Parasympathetic

maintains homeostasis at rest (para or sympath?)

Parasympathetic

conserves energy & replenishes nutrients (para or sympath?)

Parasympathetic

active when body is at rest or digesting (para or sympath?)

Parasympathetic

“rest-and-digest” (para or sympath?)

Sympathetic

maintain homeostasis during exercise (para or sympath?)

Sympathetic

release of nutrients, increased alertness & metabolic activity (para or sympath?)

Sympathetic

direct body responses in stressful & frightening situations (para or sympath?)

Sympathetic

“fight-or-flight” (para or sympath?)

Parasympathetic

arises from brain & sacral regions- craniosacral division (para or sympath?)

Parasympathetic

long preganglionic myelinated axon (para or sympath?)

Parasympathetic

short postganglionic unmyelinated axon (para or sympath?)

Parasympathetic

autonomic ganglion close to effector (para or sympath?)

Sympathetic

arises from thoracic & lumbar regions- thoracolumbar division (para or sympath?)

Sympathetic

short preganglionic myelinated axon (para or sympath?)

Sympathetic

long postganglionic unmyelinated axon (para or sympath?)

Sympathetic

autonomic ganglion close to spinal cord (para or sympath?)