HESI A2 A&P NERVOUS SYSTEM 2026
COMPLETE REVIEW WITH QUESTIONS
AND VERIFIED ANSWERS | GRADED A+
| GUARANTEED SUCCESS
Updated 2026 Questions and Answers | 100% Verified
Exam Prep and Comprehensive Rationales Included
, Peripheral Nervous System (PNS) composed of all nerves in the body and their branches
Somatic carries info to skeletal muscles
Autonomic -carries info to smooth, cardiac muscle, glands
-sympathetic and parasympathetic
Sympathetic prepares body for flight or fight
Parasympathetic prepares body for rest and digestion
neurons -specialized to react to physical and chemical changes in their surroundings
neuroglia -nourish neurons and send and receive chemical messages
-outnumber neurons in the brain
How do skeletal muscles contract skeletal muscle receives nerve impulses that cause contraction
Main components of a neuron -cell body
-axon
-dendrites
Cell body of neuron
Dendrites little tail-like receptors that transmit impulses toward the cell body
Axon transmit nerve pulses away from cell body
Foundational units of nervous system -neurons
-nerve cells
Major parts of the brain -cerebrum
-cerebellum
-medulla oblongata
Cerebrum associated with movement and sensory input
Cerebellum responsible for muscle coordination
COMPLETE REVIEW WITH QUESTIONS
AND VERIFIED ANSWERS | GRADED A+
| GUARANTEED SUCCESS
Updated 2026 Questions and Answers | 100% Verified
Exam Prep and Comprehensive Rationales Included
, Peripheral Nervous System (PNS) composed of all nerves in the body and their branches
Somatic carries info to skeletal muscles
Autonomic -carries info to smooth, cardiac muscle, glands
-sympathetic and parasympathetic
Sympathetic prepares body for flight or fight
Parasympathetic prepares body for rest and digestion
neurons -specialized to react to physical and chemical changes in their surroundings
neuroglia -nourish neurons and send and receive chemical messages
-outnumber neurons in the brain
How do skeletal muscles contract skeletal muscle receives nerve impulses that cause contraction
Main components of a neuron -cell body
-axon
-dendrites
Cell body of neuron
Dendrites little tail-like receptors that transmit impulses toward the cell body
Axon transmit nerve pulses away from cell body
Foundational units of nervous system -neurons
-nerve cells
Major parts of the brain -cerebrum
-cerebellum
-medulla oblongata
Cerebrum associated with movement and sensory input
Cerebellum responsible for muscle coordination
