Skeletal Muscle Physiology - Physiology | Biology+

Course

Other

Study Pack

Set 1: Principles of Cell Function

Set 2: Homeostasis of Body Fluids

Set 3: Signal Transduction, membrane Receptors, second Messengers, and Regulation of Gene Expression

Set 4: The Nervous System: Introduction to Cells and Systems

Set 5: Generation and Conduction of Action Potentials

Set 6: Synaptic Transmission

Set 7: The Somatosensory System

Set 8: The Special Senses

Set 9: Organization of Motor Function

Set 10: Higher Functions of the Nervous System

Set 11: The Autonomic Nervous System and Its Central Control

Set 12: Skeletal Muscle Physiology

Set 13: Cardiac Muscle

Set 14: Smooth Muscle

Set 15: Overview of Circulation

Set 16: Elements of Cardiac Function

Set 17: Properties of the Vasculature

Set 18: Regulation of the Heart and Vasculature

Set 19: Integrated Control of the Cardiovascular System

Set 20: Structure and Function of the Respiratory System

Set 21: Static Lung and Chest Wall Mechanics

Set 22: Dynamic Lung and Chest Wall Mechanics

Set 23: Ventilation

Set 24: Oxygen and Carbon Dioxide Transport

Set 25: Control of Respiration

Set 26: Non-Physiologic Functions of the Lung: Host Defense and Metabolism

Set 27: Functional Anatomy and General Principles of Regulation in the Gastrointestinal Tract

Set 28: The Cephalic, oral, and Esophageal Phases of the Integrated Response to a Meal

Set 29: The Gastric Phase of the Integrated Response to a Meal

Set 30: The Small Intestinal Phase of the Integrated Response to a Meal

Set 31: The Colonic Phase of the Integrated Response to a Meal

Set 32: Transport and Metabolic Functions of the Liver

Set 33: Elements of Renal Function

Set 34: Solute and Water Transport Along the Nephron: Tubular Function

Set 35: Control of Body Fluid Osmolality and Volume

Set 36: Potassium, calcium, and Phosphate Homeostasis

Set 37: Role of the Kidneys in the Regulation of Acid-Base Balance

Set 38: Introduction to the Endocrine System

Set 39: Hormonal Regulation of Energy Metabolism

Set 40: Hormonal Regulation of Calcium and Phosphate Metabolism

Set 41: The Hypothalamus and Pituitary Gland

Set 42: The Thyroid Gland

Set 43: The Adrenal Glands

Set 44: The Male and Female Reproductive Systems

Set 12 Skeletal Muscle Physiology

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Set 12 Skeletal Muscle Physiology

(Multiple Choice)

Free

Stretching a skeletal muscle beyond rest length reduces the force of contraction because of:

A)Increased Ca⁺⁺ sensitivity of actin-myosin interaction.
B)Increased Ca⁺⁺ influx through stretch-activated channels.
C)Decreased actin-myosin overlap.
D)Decreased Ca⁺⁺ uptake by the SR.
E)Decreased intracellular pH.

Answer

(Multiple Choice)

Free

Relaxation of skeletal muscle after contraction requires:

A)Ca⁺⁺ release by the ryanodine receptor.
B)Ca⁺⁺ uptake by sarcoplasmic endoplasmic reticulum calcium-adenosine triphosphatase (SERCA).
C)Ca⁺⁺ efflux by the plasmalemmal Ca⁺⁺ pump.
D)Dephosphorylation of a myosin light chain.
E)Activation of Rho kinase.

Answer

(Multiple Choice)

Free

The speed of contraction of skeletal muscle is related to:

A)The oxidative capacity of the skeletal muscle fiber.
B)The myosin adenosine triphosphatase (ATPase)activity of the skeletal muscle fiber.
C)The level of β-adrenergic stimulation.
D)The rate of Ca⁺⁺ extrusion from the skeletal muscle fiber.
E)The level of myosin light-chain phosphorylation within the muscle fiber.

Answer