Anatomy And Physiology Chapter 5 The Muscular System Flashcards

The plasma membrane of a skeletal muscle fiber is called the sarcolemma. The position of standing on the heels with the toes pointing up of the floorWhat is plantar flexion? Movement that brings part of the body backwardWhat is lateral excursion? This action requires energy, which is provided by ATP. Two musclesWhat is the main muscle for breathing?

1. Chapter 5 lab investigation muscles answer key quiz
2. Chapter 5 lab investigation muscles answer key pdf
3. Chapter 5 lab investigation muscles answer key 2021
4. Chapter 5 lab investigation muscles answer key answers

Chapter 5 Lab Investigation Muscles Answer Key Quiz

This energy is expended as the myosin head moves through the power stroke; at the end of the power stroke, the myosin head is in a low-energy position. It is the inability of a muscle to fully respond to a nerve stimulusWhat is physiological contracture? 2 Bones of the Skull. This can only happen in the presence of calcium, which is kept at extremely low concentrations in the sarcoplasm. Myofibrils are connected to each other by intermediate, or desmin, filaments that attach to the Z disc. Larger motionWhat is an isotonic movement? In the presence of Sarin, acetycholine is not removed from the synapse, resulting in continuous stimulation of the muscle plasma membrane. Chapter 5 lab investigation muscles answer key 2021. 2 Matching Endocrine Glands and Hormones. Binds to tropomyosin and helps to position it on the actin molecule, and also binds calcium ions. ATP binding causes myosin to release actin, allowing actin and myosin to detach from each other. To enable a muscle contraction, tropomyosin must change conformation, uncovering the myosin-binding site on an actin molecule and allowing cross-bridge formation. They reside in the A band and do not contact the z linesWhat is thick myofilament? 6 - The Nervous System.

Chapter 5 Lab Investigation Muscles Answer Key Pdf

The cell membrane of a muscle fiber is called a ________. The striations are caused by the regular arrangement of contractile proteins (actin and myosin). 3 Connective Tissue. Thick filaments are composed of the protein myosin. As ACh binds at the motor end plate, this depolarization is called an end-plate potential. Slow twitch fibersThe effects of decreased muscle mass include what? The power stroke occurs when ADP and phosphate dissociate from the actin active site. Chapter 5 lab investigation muscles answer key pdf. Thin filaments are pulled by the thick filaments toward the center of the sarcomere until the Z discs approach the thick filaments. 2 Urine Glucose Testing. They are attached to Z lines and extend towards center of sarcomere but do not do filaments reside? Acetylcholine (ACh) is a neurotransmitter released by motor neurons that binds to receptors in the motor end plate.

Chapter 5 Lab Investigation Muscles Answer Key 2021

ACh is broken down by the enzyme acetylcholinesterase (AChE) into acetyl and choline. This reduces the voltage difference between the inside and outside of the cell, which is called depolarization. By aerobic respiration when the muscle is resting and depleted quickly is radibly contracting muscle; energy is transferred back to ADP when ATP levels is muscle fatigue? 2 Structure of the Digestive System. Chapter 5 lab investigation muscles answer key chemistry. Tension in the muscle increases, but there is no shortening of the muscleHow many parts are there to a lever system? The diaphragmWhat are the two accessory muscles?

Chapter 5 Lab Investigation Muscles Answer Key Answers

1 Internal Structures of the Eye. A sarcomere is defined as the distance between two consecutive Z discs or Z lines; when a muscle contracts, the distance between the Z discs is reduced. Stimulate it to is extensibility? Are not under voluntary control, rely on aerobic and anaerobic respiration for energy, and are located in the walls of blood vessels and hollows organsMuscle tissue must maintain what for contraction? 5 Debating Reproductive Health Issues. Small structures that make up myofibrils. Acts to block myosin binding sites on actin molecules, preventing cross-bridge formation and preventing contraction until a muscle receives a neuron signal. Potassium is able to leave the cell through K+ channels that are open 90% of the time, and it does. PerimysiumA fascicle is composed of muscle cells (muscle fibers) surrounded by what?

Gait shortensexercise is the best way to limit the effects of what? Conversely, if the sarcomere is stretched to the point at which thick and thin filaments do not overlap at all, no cross-bridges are formed and no tension is produced.

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