Textbook Question
The connective tissue sheath that surrounds a fascicle of nerve fibers is the
a. Epineurium
b. Endoneurium
c. Perineurium
d. Epimysium
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Ch. 13 The Peripheral Nervous System and Reflex Activity
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
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Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Not the one you use?Change textbook
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Marieb, Hoehn 11th EditionCh. 13 The Peripheral Nervous System and Reflex ActivityProblem 7
Marieb, Hoehn 11th EditionCh. 13 The Peripheral Nervous System and Reflex ActivityProblem 7Chapter 13, Problem 7
Match the names of the cranial nerves in column B to the appropriate description in column A.
Column A
_______ (1) Causes pupillary constriction
_______ (2) The major sensory nerve of the face
_______ (3) Serves the sternocleido-mastoid and trapezius muscles
_______ (4) Purely sensory (two nerves)
_______ (5) Serves the tongue muscles
_______ (6) Allows you to chew your food
_______ (7) Impaired in Bell's palsy
_______ (8) Helps regulate heart activity
_______ (9) Helps you hear and maintain your balance
_______ (10) Contain parasympathetic motor fibers (four nerves)
Column B
a. Abducens
b. Accessory
c. Facial
d. Glossopharyngeal
e. Hypoglossal
f. Oculomotor
g. Olfactory
h. Optic
i. Trigeminal
j. Trochlear
k. Vagus
l. Vestibulocochlear
Verified step by step guidance1
Step 1: Identify the cranial nerve responsible for pupillary constriction. This function is typically associated with parasympathetic fibers controlling the iris muscles, which is a key role of the Oculomotor nerve. So, match (1) with the Oculomotor nerve (f).
Step 2: Determine the major sensory nerve of the face. The Trigeminal nerve is known as the primary sensory nerve for the face, providing sensation to the skin and mucous membranes. Match (2) with the Trigeminal nerve (i).
Step 3: Find the nerve that serves the sternocleidomastoid and trapezius muscles. These muscles are innervated by the Accessory nerve, which controls certain neck and shoulder movements. Match (3) with the Accessory nerve (b).
Step 4: Identify the purely sensory cranial nerves. Among the options, the Olfactory nerve (smell) and the Optic nerve (vision) are purely sensory. Match (4) with Olfactory (g) and Optic (h).
Step 5: For the remaining descriptions, use knowledge of cranial nerve functions: (5) tongue muscles are served by the Hypoglossal nerve (e); (6) chewing is controlled by the Trigeminal nerve (i); (7) Bell's palsy affects the Facial nerve (c); (8) heart regulation involves the Vagus nerve (k); (9) hearing and balance are functions of the Vestibulocochlear nerve (l); and (10) parasympathetic motor fibers are found in four nerves including Oculomotor (f), Facial (c), Glossopharyngeal (d), and Vagus (k).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Functions of Cranial Nerves
Cranial nerves have specific sensory, motor, or mixed functions that control various head and neck activities. Understanding their roles, such as sensory input from the face or motor control of muscles, is essential for matching nerves to their descriptions.
Recommended video:
Guided course
8:20
Overview of Cranial Bones
Parasympathetic Innervation by Cranial Nerves
Some cranial nerves carry parasympathetic fibers that regulate involuntary functions like pupil constriction and heart rate. Identifying which nerves contain these fibers helps in linking them to autonomic functions described in the question.
Recommended video:
0:56Parasympathetic Nervous System Example 2
Clinical Associations of Cranial Nerves
Certain cranial nerves are linked to clinical conditions, such as Bell's palsy affecting the facial nerve. Recognizing these associations aids in correctly identifying nerves based on symptoms or impairments mentioned.
Recommended video:
Guided course
8:20Overview of Cranial Bones
Related Practice
Textbook Question
Match the receptor type in column B to the correct description in column A.
Column A
______ (1) Pain, itch, and temperature receptors
______ (2) Contains intrafusal fibers and anulospiral and flower spray endings
______ (3) Discriminative touch receptor in hairless skin (fingertips)
______ (4) Contains receptor endings wrapped around thick collagen bundles
______ (5) Rapidly adapting deep-pressure receptor
______ (6) Slowly adapting deep-pressure receptor
Column B
a. Bulbous corpuscles
b. Tendon organ
c. Muscle spindle
d. Free nerve endings
e. Lamellar corpuscle
f. Tactile corpuscle
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