Podcast
Questions and Answers
Which are nerve plexuses of the body? (Select all that apply)
Which are nerve plexuses of the body? (Select all that apply)
Functions of the spinal cord include which of the following? (Select all that apply)
Functions of the spinal cord include which of the following? (Select all that apply)
What structure marks the superior end of the spinal cord?
What structure marks the superior end of the spinal cord?
Foramen magnum
What is a region of the spinal cord supplied by a pair of spinal nerves called?
What is a region of the spinal cord supplied by a pair of spinal nerves called?
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What is the posterior median sulcus of the spinal cord?
What is the posterior median sulcus of the spinal cord?
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The superior most region of the spinal cord is the ______ region.
The superior most region of the spinal cord is the ______ region.
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Which are functions of the spinal cord? (Select all that apply)
Which are functions of the spinal cord? (Select all that apply)
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Where does the spinal cord arise from the medulla oblongata?
Where does the spinal cord arise from the medulla oblongata?
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How are the spinal cord regions named?
How are the spinal cord regions named?
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Each pair of spinal nerves serves a part of the spinal cord called a spinal ______.
Each pair of spinal nerves serves a part of the spinal cord called a spinal ______.
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The ___________ median sulcus is a longitudinal groove on the dorsal surface of the spinal cord.
The ___________ median sulcus is a longitudinal groove on the dorsal surface of the spinal cord.
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What are the regions of the spinal cord? (Select all that apply)
What are the regions of the spinal cord? (Select all that apply)
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The ______ enlargement is the area of spinal cord that gives rise to the nerves of the lower limbs and pelvis.
The ______ enlargement is the area of spinal cord that gives rise to the nerves of the lower limbs and pelvis.
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The spinal cord contains ascending and descending nerve fibers that send information between the CNS and the periphery. This illustrates which function of the spinal cord?
The spinal cord contains ascending and descending nerve fibers that send information between the CNS and the periphery. This illustrates which function of the spinal cord?
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Place the spinal cord regions in order from superior to inferior: 1. ______, 2. ______, 3. ______, 4. ______.
Place the spinal cord regions in order from superior to inferior: 1. ______, 2. ______, 3. ______, 4. ______.
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The ______ is the tapered end of the spinal cord.
The ______ is the tapered end of the spinal cord.
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Each spinal cord segment gives rise to a pair of spinal nerves. How many pairs of spinal nerves are typically present in an adult?
Each spinal cord segment gives rise to a pair of spinal nerves. How many pairs of spinal nerves are typically present in an adult?
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What is the cauda equina?
What is the cauda equina?
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The __________ enlargement of the spinal cord gives rise to the nerves of the upper limbs.
The __________ enlargement of the spinal cord gives rise to the nerves of the upper limbs.
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The ______ are a series of fibrous connective tissue membranes covering the central nervous system.
The ______ are a series of fibrous connective tissue membranes covering the central nervous system.
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The dural sheath around the spinal cord is formed from the _________ mater.
The dural sheath around the spinal cord is formed from the _________ mater.
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The _________ space is located between the vertebrae and the dural sheath around the spinal cord.
The _________ space is located between the vertebrae and the dural sheath around the spinal cord.
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Which meninx consists of simple squamous epithelium with a mesh of fibers in the adjoining space?
Which meninx consists of simple squamous epithelium with a mesh of fibers in the adjoining space?
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What is the order of the meninges from superficial to deep?
What is the order of the meninges from superficial to deep?
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What is the subarachnoid space?
What is the subarachnoid space?
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What is the dural sheath around the spinal cord made of?
What is the dural sheath around the spinal cord made of?
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In which does cerebrospinal fluid circulate?
In which does cerebrospinal fluid circulate?
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The bundle of nerves inferior to the medullary cone of the spinal cord is called the ______.
The bundle of nerves inferior to the medullary cone of the spinal cord is called the ______.
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The lumbar cistern is the name of the hollow space that contains the _________ equina and cerebrospinal fluid.
The lumbar cistern is the name of the hollow space that contains the _________ equina and cerebrospinal fluid.
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Where is the epidural space around the spinal cord?
Where is the epidural space around the spinal cord?
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Which meninx is just below (deep to) the dura mater?
Which meninx is just below (deep to) the dura mater?
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Which layer of the meninges is the most delicate and is composed of one or two layers of squamous to cuboidal cells and delicate collagenous and elastic fibers?
Which layer of the meninges is the most delicate and is composed of one or two layers of squamous to cuboidal cells and delicate collagenous and elastic fibers?
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The space between the arachnoid mater and pia mater is called the ___________ space.
The space between the arachnoid mater and pia mater is called the ___________ space.
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The cerebrospinal fluid circulates in the __________ space between the meninges.
The cerebrospinal fluid circulates in the __________ space between the meninges.
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The subarachnoid space inferior to the medullary cone is called the ______.
The subarachnoid space inferior to the medullary cone is called the ______.
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Study Notes
Nerve Plexuses
- Major nerve plexuses in the body include sacral, brachial, cervical, and lumbar regions.
Functions of the Spinal Cord
- Main functions encompass conduction, locomotion, and reflexes.
Structure of the Spinal Cord
- The superior end of the spinal cord is marked by the foramen magnum.
- A segment refers to a region of the spinal cord served by a pair of spinal nerves.
- The posterior median sulcus is a longitudinal groove located on the dorsal surface.
Spinal Cord Regions
- The spinal cord is organized into cervical, thoracic, lumbar, and sacral regions, named based on the corresponding vertebral column segments.
Spinal Nerves
- Each spinal cord segment is associated with a pair of spinal nerves, totaling 31 pairs in an adult.
- The lumbosacral enlargement is responsible for nerves that supply the lower limbs and pelvis.
Spinal Cord Functions
- The spinal cord features both ascending and descending nerve fibers that facilitate communication between the central nervous system (CNS) and peripheral areas.
Anatomical Terminology
- The medullary cone indicates the tapered end of the spinal cord.
- The cauda equina consists of a bundle of nerve roots from L2 to S5 within the vertebral canal.
Meninges Composition
- Meninges are protective membranes covering the CNS, comprising three layers: dura mater (outer), arachnoid mater (middle), and pia mater (innermost).
- The dural sheath encapsulating the spinal cord is formed from dura mater.
- The epidural space is located between the vertebral bones and the dural sheath.
Cerebrospinal Fluid (CSF) Circulation
- CSF circulates in the subarachnoid space, which lies between the arachnoid mater and pia mater.
- The lumbar cistern refers to the subarachnoid space that contains the cauda equina and cerebrospinal fluid.
Layer Specifics
- The arachnoid mater consists of simple squamous epithelium supported by a mesh of fibers.
- The pia mater is the most delicate layer, composed of one or two layers of squamous to cuboidal cells with fine collagenous and elastic fibers.
Subarachnoid Space
- The subarachnoid space, located between the arachnoid and pia mater, is where CSF circulates and is essential for cushioning the spinal cord.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the key concepts of Chapter 13 focusing on nerve plexuses and the functions of the spinal cord. These flashcards cover important structures and regions relevant to spinal anatomy. Perfect for students looking to reinforce their learning in human anatomy.
