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Anatomy and Physiology II (BIOS 252 / BIOS252) – Chamberlain University – 2026/2027 Exam 2 Nervous System, Brain Anatomy, and Cranial Nerves Practice Questions with Answers

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This document covers Exam 2 content for Anatomy and Physiology II, focusing on spinal nerves, nerve plexuses, reflexes, sensory and motor pathways, the autonomic nervous system, and brain anatomy. It also includes detailed review questions and answers on cerebrospinal fluid, meninges, brain stem structures, cerebrum functions, cerebral lobes, and cranial nerves I–XII. The material is organized as a question-and-answer study guide designed for exam preparation and concept reinforcement. It provides comprehensive coverage of nervous system topics commonly assessed in BIOS 252 coursework and examinations.

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Exam 2: BIOS 252/ BIOS252 | Questions and correct
Answers (Latest 2026/ 2027 Update) Anatomy and
Physiology II with Lab Review | Grade A| 100 OUT OF 100
(Accurate) -Chamberlain

How many pairs of spinal nerves are there?
31 pairs




How many pairs of cervical nerves are there?

8 pairs




How many pairs of thoracic nerves are there?

12 pairs




How many pairs of lumbar nerves are there?
5 pairs




How many pairs of sacral nerves are there?

5 pairs




How many pairs of coccygeal nerves are there?
1 pair

, Exam 2: BIOS 252/ BIOS252 | Questions and correct
Answers (Latest 2026/ 2027 Update) Anatomy and
Physiology II with Lab Review | Grade A| 100 OUT OF 100
(Accurate) -Chamberlain
What are the 5 divisions of spinal nerves?
cervical, thoracic, lumbar, sacral, coccygeal




What type of neuron is the dorsal root?

Sensory (afferent)




What type of neuron is the ventral root?

Motor (efferent)




Do spinal nerves contain sensory or motor neurons?
Both




What are myotomes?

specific muscle groups innervated by specific levels of spinal nerves




What are dermatomes?

specific patches of skin innervated by specific levels of the spinal column




What is the endoneurium?

, Exam 2: BIOS 252/ BIOS252 | Questions and correct
Answers (Latest 2026/ 2027 Update) Anatomy and
Physiology II with Lab Review | Grade A| 100 OUT OF 100
(Accurate) -Chamberlain
connective tissue surrounding each individual axon




What is the perineurium?

connective tissue surrounding a bundle of axons making a nerve fascicle




What is the epineurium?

connective tissue surrounding the entire nerve




What areas does the cervical plexus serve?

head and neck




Where is the phrenic nerve located?

C3-C5




What does the phrenic nerve do?

innervates the diaphragm




What is the cervical plexus made of?
roots and nerves

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