Domanda del libro di testo
What three types of mechanoreceptors respond to stretching, compression, twisting, or other distortions of their plasma membrane?
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Ch. 15 Sensory Pathways and the Somatic Nervous System
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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TOC.tableOfContents
- Ch. 1 An Introduction to Anatomy and Physiology26
- Ch. 2 The Chemical Level of Organization34
- Ch. 3 The Cellular Level of Organization30
- Ch. 4 The Tissue Level of Organization24
- Ch. 5 The Integumentary System17
- Ch. 6 Bones and Bone Structure36
- Ch. 7 The Axial Skeleton11
- Ch. 8 The Appendicular Skeleton17
- Ch. 9 Joints13
- Ch. 10 Muscle Tissue12
- Ch. 11 The Muscular System28
- Ch. 12 Nervous Tissue18
- Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes22
- Ch. 14 The Brain and Cranial Nerves20
- Ch. 15 Sensory Pathways and the Somatic Nervous System17
- Ch. 16 The Autonomic Nervous System and Higher-Order Functions30
- Ch. 17 The Special Senses16
- Ch. 18 The Endocrine System20
- Ch. 19 Blood31
- Ch. 20 The Heart31
- Ch. 21 Blood Vessels and Circulation29
- Ch. 22 The Lymphatic System and Immunity31
- Ch. 23 The Respiratory System12
- Ch. 24 The Digestive System18
- Ch. 26 The Urinary System31
- Ch. 27 Fluids & Electrolytes32
- Ch. 28 The Reproductive System12
- Ch. 29 Development and Inheritance23
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089Non è quello che usi tu?Cambia libro di testo
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Martini, Nath, Bartholomew 11th EditionCh. 15 Sensory Pathways and the Somatic Nervous SystemProblema 5
Martini, Nath, Bartholomew 11th EditionCh. 15 Sensory Pathways and the Somatic Nervous SystemProblema 5Capitolo 15, Problema 5
Identify and shade in the locations of all the ascending sensory tracts in the following diagram of the spinal cord.
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Step 1: Understand that ascending sensory tracts carry sensory information from the body to the brain. These tracts are located in the white matter of the spinal cord, specifically in the dorsal (posterior) and lateral funiculi.
Step 2: Identify the dorsal (posterior) funiculus, which is the area of white matter located between the dorsal root entry zone and the posterior median sulcus. This region contains ascending sensory tracts such as the fasciculus gracilis and fasciculus cuneatus.
Step 3: Locate the lateral funiculus, which is the white matter area on the lateral sides of the spinal cord. This region contains ascending sensory tracts like the spinothalamic tract and spinocerebellar tracts.
Step 4: Shade the dorsal funiculus (posterior white column) and the lateral funiculus on the diagram to represent the locations of the ascending sensory tracts.
Step 5: Confirm that the anterior (ventral) funiculus is not shaded, as it primarily contains descending motor tracts, not ascending sensory tracts.
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Ascending Sensory Tracts
Ascending sensory tracts are bundles of nerve fibers in the spinal cord that carry sensory information from the body to the brain. These tracts transmit signals such as touch, pain, temperature, and proprioception. Understanding their location helps in identifying how sensory information is processed and relayed.
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Sensory Receptors
Spinal Cord Anatomy and Cross-Section
The spinal cord cross-section shows gray matter (butterfly-shaped) surrounded by white matter. The white matter contains ascending and descending tracts. The dorsal (posterior) root carries sensory fibers into the spinal cord, while the ventral (anterior) root carries motor fibers out. Recognizing these structures is essential for locating sensory tracts.
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01:57Anatomical Planes & Sections Example 2
Dorsal Root and Sensory Input
The dorsal root contains afferent sensory neurons that enter the spinal cord carrying sensory information from peripheral receptors. This root connects to the dorsal horn of the gray matter, where sensory processing begins. Identifying the dorsal root is key to understanding the pathway of ascending sensory tracts.
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2:47Sensory Receptors
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The CNS interprets information entirely on the basis of the
(a) Number of action potentials that it receives
(b) Kind of action potentials that it receives
(c) Line over which sensory information arrives
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