Domanda del libro di testo
The biggest source of metabolic acids in the body is:
a. Lactic acid
b. Ketone bodies
c. Carbon dioxide
d. Uric acid
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Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814
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TOC.tableOfContents
- Ch. 1 Introduction to Anatomy and Physiology24
- Ch. 2 The Chemistry of Life37
- Ch. 3 The Cell54
- Ch. 4 Histology46
- Ch. 5 The Integumentary System30
- Ch. 6 Bones and Bone Tissue36
- Ch. 7 The Skeletal System40
- Ch. 8 Articulations19
- Ch. 9 The Muscular System35
- Ch. 10 Muscle Tissue and Physiology29
- Ch. 11 Introduction to the Nervous System and Nervous Tissue28
- Ch. 12 The Central Nervous System41
- Ch. 13 The Peripheral Nervous System41
- Ch. 14 The Autonomic Nervous System and Homeostasis31
- Ch. 15 The Special Senses39
- Ch. 16 The Endocrine System42
- Ch. 17 The Cardiovascular System I: The Heart28
- Ch. 18 The Cardiovascular System II: The Blood Vessels43
- Ch. 19 Blood32
- Ch. 20 The Lymphatic System and Immunity41
- Ch. 21 The Respiratory System27
- Ch. 22 The Digestive System27
- Ch. 23 Metabolism and Nutrition7
- Ch. 24 The Urinary System39
- Ch. 25 Fluid, Electrolyte, and Acid-Base Homeostasis39
- Ch. 26 The Reproductive System10
- Ch. 27 Development and Heredity5
Amerman3rd EditionHuman Anatomy & PhysiologyISBN: 9780138247201, 9780138247928, 9780138201814Non è quello che usi tu?Cambia libro di testo
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Amerman 3rd EditionCh. 25 Fluid, Electrolyte, and Acid-Base HomeostasisProblema 10d
Amerman 3rd EditionCh. 25 Fluid, Electrolyte, and Acid-Base HomeostasisProblema 10dCapitolo 25, Problema 10d
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d. Hypocalcemia causes neurons to become hyperexcitable, leading to potential tetanic contractions.
Guida verificata passo dopo passo1
Understand the term 'hypocalcemia': Hypocalcemia refers to a condition where there is a lower-than-normal level of calcium in the blood. Calcium plays a critical role in muscle contraction, nerve signaling, and maintaining the stability of cell membranes.
Analyze the effect of hypocalcemia on neurons: Calcium ions are essential for stabilizing the resting membrane potential of neurons. A deficiency in calcium (hypocalcemia) reduces the threshold for action potential generation, making neurons more excitable.
Relate hyperexcitability to tetanic contractions: Hyperexcitable neurons can lead to excessive stimulation of muscles, potentially causing sustained muscle contractions, also known as tetanic contractions.
Evaluate the statement: The statement 'Hypocalcemia causes neurons to become hyperexcitable, leading to potential tetanic contractions' is true because it accurately describes the physiological effects of low calcium levels on neuronal and muscular activity.
Conclude the assessment: Since the statement is true, no correction is needed. If it were false, the correction would involve explaining the role of calcium in stabilizing neuronal activity and preventing hyperexcitability.
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Hypocalcemia
Hypocalcemia refers to a condition characterized by low levels of calcium in the blood. Calcium is crucial for various physiological functions, including muscle contraction and neurotransmitter release. When calcium levels drop, it can disrupt normal cellular activities, particularly in neurons and muscle cells, leading to increased excitability and potential complications.
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Neuronal Excitability
Neuronal excitability is the ability of neurons to respond to stimuli and generate action potentials. Changes in ion concentrations, such as calcium, sodium, and potassium, significantly influence this excitability. In the case of hypocalcemia, the reduced calcium levels can lead to increased neuronal firing, which may result in symptoms like muscle spasms or tetany.
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Tetany
Tetany is a condition characterized by involuntary muscle contractions and spasms, often resulting from electrolyte imbalances, including low calcium levels. In hypocalcemia, the heightened excitability of neurons can lead to sustained muscle contractions, causing symptoms such as cramps and spasms. Understanding the relationship between calcium levels and muscle function is essential for recognizing and treating tetany.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
a. Potassium ions are responsible for the repolarization phase of the action potential.
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Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. Hyperkalemia tends to decrease the resting membrane potential and hyperpolarize excitable cells.
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Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
e. Chloride ions are generally reabsorbed from the kidneys, along with bicarbonate ions.
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Domanda del libro di testo
What is the main buffer system of the ECF?
a. Protein buffer system
b. Carbonic acid–bicarbonate ion buffer system
c. Phosphate buffer system
d. None of the above
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Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
b. Insulin, aldosterone, and epinephrine stimulate the uptake of potassium ions into cells.
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