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Ch. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes
Martini - Fundamentals of Anatomy & Physiology 11th Edition
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Martini, Nath, Bartholomew 11th EditionCh. 13 The Spinal Cord, Spinal Nerves, and Spinal Reflexes문제 26
13장, 문제 26

Ascending tracts
(a) Carry sensory information to the brain,
(b) Carry motor information to the brain
(c) Carry sensory information from the brain
(d) Carry motor information from the brain
(e) Connect perceptive areas with the brain

검증된 단계별 안내
1
Step 1: Understand the definition of ascending tracts in the nervous system. Ascending tracts are bundles of nerve fibers that transmit information from the peripheral body parts up to the brain.
Step 2: Recall that sensory information refers to signals related to sensations such as touch, pain, temperature, and proprioception, which are sent from the body to the brain for processing.
Step 3: Recognize that motor information involves commands sent from the brain to muscles or glands to produce movement or action, which is typically carried by descending tracts, not ascending tracts.
Step 4: Analyze each option in the problem: (a) Carry sensory information to the brain — this aligns with the function of ascending tracts; (b) and (d) involve motor information, which ascending tracts do not carry; (c) and (e) describe functions not typically associated with ascending tracts.
Step 5: Conclude that the correct description of ascending tracts is that they carry sensory information to the brain, which corresponds to option (a).

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주요 개념

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Ascending Tracts

Ascending tracts are bundles of nerve fibers in the spinal cord that transmit sensory information from the peripheral body to the brain. They carry signals such as touch, pain, temperature, and proprioception, enabling the brain to perceive and respond to stimuli.
추천 영상:
1:08
The Cerebrum Example 7

Sensory vs. Motor Pathways

Sensory pathways carry information from sensory receptors toward the central nervous system, while motor pathways transmit commands from the brain to muscles. Ascending tracts are sensory, whereas descending tracts are motor, reflecting their direction and function.
추천 영상:
1:06
Organization of Sensory Pathways Example 1

Neural Communication Directionality

Neural tracts are classified by the direction they carry impulses: ascending tracts move impulses upward to the brain, and descending tracts carry impulses downward from the brain. Understanding this directionality is key to identifying the function of different spinal cord pathways.
추천 영상:
가이드 코스
2:59
Map of the Lesson on Cell Communication
관련 실천
교과서 질문

Side-to-side movements of the spinal cord are prevented by the:

(a) Filum terminale

(b) Denticulate ligaments

(c) Dura mater

(d) Pia mater

(e) Arachnoid mater

교과서 질문

Mary complains that when she wakes up in the morning, her thumb and forefinger are always “asleep.” She mentions this condition to her physician, who asks Mary whether she sleeps with her wrists flexed. She replies that she does. The physician tells Mary that sleeping in that position may compress a portion of one of her peripheral nerves, producing her symptoms. Which nerve is involved?

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교과서 질문

Bowel and urinary bladder control involve spinal reflex arcs that are located in the sacral region of the spinal cord. In both instances, two sphincter muscles—an inner sphincter of smooth muscle and an outer sphincter of skeletal muscle—control the passage of wastes (feces and urine) out of the body. How would a transection of the spinal cord at the L1 segment level affect an individual's bowel and bladder control?

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교과서 질문

The subarachnoid space contains:

(a) cerebrospinal fluid

(b) lymph

(c) air,

(d) connective tissue and blood vessels

(e) denticulate ligaments.

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교과서 질문

What five characteristics are common to all polysynaptic reflexes?

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교과서 질문

What effect does the stimulation of a sensory neuron that innervates an intrafusal muscle fiber have on muscle tone?

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