Exam 2 - BIOS252 / BIOS 252 (Latest 2024 /
2025) : Anatomy And Physiology II With Lab -
Chamberlain 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
- pairs 1 / 4
how many pairs of sacral nerves are there? - ANSWER 5 pairs how many pairs of coccygeal nerves are there? - ANSWER
- 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 2 / 4
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 3 / 4
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
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