Textbook Question
What physiological activities distinguish non-REM sleep from REM sleep?
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Ch. 16 The Autonomic Nervous System and Higher-Order Functions
Martini, Nath, Bartholomew11th EditionFundamentals of Anatomy & PhysiologyISBN: 9780136874089
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Table of contents
- 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: 9780136874089Not the one you use?Change textbook
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Martini, Nath, Bartholomew 11th EditionCh. 16 The Autonomic Nervous System and Higher-Order FunctionsProblem 9
Martini, Nath, Bartholomew 11th EditionCh. 16 The Autonomic Nervous System and Higher-Order FunctionsProblem 9Chapter 16, Problem 9
What cellular mechanisms identified in animal studies are thought to be involved in memory formation and storage?
Verified step by step guidance1
Step 1: Understand that memory formation and storage involve changes at the cellular level, primarily in neurons, which are the fundamental units of the nervous system responsible for processing and transmitting information.
Step 2: Identify that one key cellular mechanism is synaptic plasticity, which refers to the ability of synapses (the connections between neurons) to strengthen or weaken over time in response to increases or decreases in their activity.
Step 3: Recognize long-term potentiation (LTP) as a well-studied form of synaptic plasticity where repeated stimulation of a synapse leads to a long-lasting increase in signal transmission between two neurons, believed to be a cellular basis for learning and memory.
Step 4: Note that molecular changes during LTP include the activation of NMDA receptors, influx of calcium ions, and subsequent signaling cascades that lead to the insertion of more AMPA receptors into the postsynaptic membrane, enhancing synaptic strength.
Step 5: Understand that other mechanisms such as changes in gene expression and protein synthesis are also involved, allowing for the structural remodeling of synapses and the formation of new synaptic connections, which contribute to long-term memory storage.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Synaptic Plasticity
Synaptic plasticity refers to the ability of synapses to strengthen or weaken over time, based on activity levels. This adaptability is fundamental for learning and memory, as it alters the efficiency of signal transmission between neurons. Long-term potentiation (LTP) is a key example, where repeated stimulation enhances synaptic strength.
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Neurogenesis
Neurogenesis is the process of generating new neurons, particularly in the hippocampus, a brain region critical for memory. This mechanism supports memory formation by integrating new neurons into existing circuits, enhancing plasticity and cognitive function. Animal studies show that increased neurogenesis correlates with improved learning.
Molecular Signaling Pathways
Molecular signaling pathways involve cascades of biochemical events within neurons that regulate memory processes. Key molecules like NMDA receptors, calcium ions, and protein kinases trigger changes in gene expression and synaptic structure. These pathways enable the consolidation and storage of memories at the cellular level.
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Related Practice
Textbook Question
All preganglionic autonomic fibers release______at their axon terminals, and the effects are always_____ .
(a) norepinephrine, inhibitory
(b) norepinephrine, excitatory
(c) acetylcholine, excitatory
(d) acetylcholine, inhibitory
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Textbook Question
What are the components of a visceral reflex arc?
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Textbook Question
What anatomical and functional changes in the brain are linked to alterations that occur with aging?
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Textbook Question
Which four ganglia serve as origins for postganglionic fibers involved in control of visceral structures in the head?
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Textbook Question
Starting in the spinal cord, trace an action potential through the sympathetic division of the ANS until it reaches a target organ in the abdominopelvic region.
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