BIOS252 EXAM 2 STUDY SET
2026 EXAM QUESTIONS AND
ANSWERS | 100% PASS
How many pairs of spinal nerves are there? - 🧠 ANSWER ✔✔31 pairs
how many cervical nerves are there? - 🧠 ANSWER ✔✔8 pairs
how many thoracic nerves are there? - 🧠 ANSWER ✔✔12 pairs
how many pairs of lumbar nerves are there? - 🧠 ANSWER ✔✔5 pairs
how many pairs of sacral nerves are there? - 🧠 ANSWER ✔✔5 pairs
,how many pairs of coccygeal nerves are there? - 🧠 ANSWER ✔✔1 pair
What is the dorsal root? - 🧠 ANSWER ✔✔axons of sensory neurons
what is the ventral root? - 🧠 ANSWER ✔✔axons of motor neurons (
efferent)
Do spinal nerves contain both sensory and motor neurons? - 🧠 ANSWER
✔✔yes
What is a myotome? - 🧠 ANSWER ✔✔specific muscle groups innervated
by specific levels of spinal nerves
what is a dermatome? - 🧠 ANSWER ✔✔specific patches of skin innervated
by specific levels of the spinal column
what is a endoneurium? - 🧠 ANSWER ✔✔connective tissue surrounding
each individual axon
What is the perineurium? - 🧠 ANSWER ✔✔connective tissue that surrounds
a bundle of axons making a nerve fascicle
What is the epineurium? - 🧠 ANSWER ✔✔surrounds the entire nerve
What is the cervical plexus? - 🧠 ANSWER ✔✔C1-C5
, what is notable nerves? - 🧠 ANSWER ✔✔Phrenic Nerve (C3-C5)
brachial plexus - 🧠 ANSWER ✔✔C5-T1, nerves to upper limb, neck, and
shoulder muscles
lumbar plexus - 🧠 ANSWER ✔✔L1-L4, nerves to abdominal wall, genitals,
and lower limb
sacral and coccygeal plexus - 🧠 ANSWER ✔✔l5-s1, nerves to the buttock,
perineum, and lower limb notable nerves; sciatic nerve, tibial and common
fibular
what is a reflex? - 🧠 ANSWER ✔✔fast, involuntary and predictable
sequence of events that function as an arc
what are the 5 steps to a reflex? - 🧠 ANSWER ✔✔Sensory receptor,
sensory neuron, interneuron, motor neuron, effector
Ipsilateral - 🧠 ANSWER ✔✔same side
contralateral - 🧠 ANSWER ✔✔opposite side
monosynaptic - 🧠 ANSWER ✔✔one synapse
polysynaptic - 🧠 ANSWER ✔✔multiple neurons stimulated
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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2026 EXAM QUESTIONS AND
ANSWERS | 100% PASS
How many pairs of spinal nerves are there? - 🧠 ANSWER ✔✔31 pairs
how many cervical nerves are there? - 🧠 ANSWER ✔✔8 pairs
how many thoracic nerves are there? - 🧠 ANSWER ✔✔12 pairs
how many pairs of lumbar nerves are there? - 🧠 ANSWER ✔✔5 pairs
how many pairs of sacral nerves are there? - 🧠 ANSWER ✔✔5 pairs
,how many pairs of coccygeal nerves are there? - 🧠 ANSWER ✔✔1 pair
What is the dorsal root? - 🧠 ANSWER ✔✔axons of sensory neurons
what is the ventral root? - 🧠 ANSWER ✔✔axons of motor neurons (
efferent)
Do spinal nerves contain both sensory and motor neurons? - 🧠 ANSWER
✔✔yes
What is a myotome? - 🧠 ANSWER ✔✔specific muscle groups innervated
by specific levels of spinal nerves
what is a dermatome? - 🧠 ANSWER ✔✔specific patches of skin innervated
by specific levels of the spinal column
what is a endoneurium? - 🧠 ANSWER ✔✔connective tissue surrounding
each individual axon
What is the perineurium? - 🧠 ANSWER ✔✔connective tissue that surrounds
a bundle of axons making a nerve fascicle
What is the epineurium? - 🧠 ANSWER ✔✔surrounds the entire nerve
What is the cervical plexus? - 🧠 ANSWER ✔✔C1-C5
, what is notable nerves? - 🧠 ANSWER ✔✔Phrenic Nerve (C3-C5)
brachial plexus - 🧠 ANSWER ✔✔C5-T1, nerves to upper limb, neck, and
shoulder muscles
lumbar plexus - 🧠 ANSWER ✔✔L1-L4, nerves to abdominal wall, genitals,
and lower limb
sacral and coccygeal plexus - 🧠 ANSWER ✔✔l5-s1, nerves to the buttock,
perineum, and lower limb notable nerves; sciatic nerve, tibial and common
fibular
what is a reflex? - 🧠 ANSWER ✔✔fast, involuntary and predictable
sequence of events that function as an arc
what are the 5 steps to a reflex? - 🧠 ANSWER ✔✔Sensory receptor,
sensory neuron, interneuron, motor neuron, effector
Ipsilateral - 🧠 ANSWER ✔✔same side
contralateral - 🧠 ANSWER ✔✔opposite side
monosynaptic - 🧠 ANSWER ✔✔one synapse
polysynaptic - 🧠 ANSWER ✔✔multiple neurons stimulated
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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