Actin and myosin - Study guides, Class notes & Summaries

WVU Biology 102 Exam 5 Questions and Answers Already Passed What are the functional units of the nervous system? neurons Basic structure / function of the neuron - dendrites, cell body and axon. Dendrites- receive impulses from the synapses of other Axon- place along which the message is sent. Long rope like object. Myelin Sheath- cover around the Axon, increases the speed of the message sent. What happens during an "action potential"? Sodium (Na) start out and then rushes in- ...

A&P 1 101 Module 5 Exam Question 1 2 / 2 pts There are three types of muscle tissue found in the body. Correct! True False Question 2 2 / 2 pts Smooth and cardiac muscle tissue are both un der voluntary control. True Correct! False Question 3 2 / 2 pts The musculocutaneous nerve is part of the central nervous system. True Correct! False False- this is a peripheral nerve Question 4 2 / 2 pts A motor signal is a signal that is sent from a muscle to the central nervous system. True Correct! False F...

What structure runs from Z line to Z line? Sarcomere The movement of the troponin-tropomyosin complex requires _______ Ca2+. The actin filament is a polymer formed from 300 to 400 globular subunits called ______ Gactin. A myofilament is the _________. Protein strand composed of actin or myosin T tubules ________. Conduct action potentials deep into the muscle cell A drug that interferes with the active transport of calcium ions from the sarcoplasm back into the sarcoplasmic reticulum would...

Function of all muscles correct answers to generate force and movement Skeletal muscles correct answers - voluntary (somatic neurons) - striated - Multi-nucleated - insertion is more distal - antagonistic muscle groups = flexor-extensor pairs - 40% of body weight Cardiac Muscle correct answers - Primarily involuntary - striated and uninucleated - spontaneous electrical activity - altered by autonimc NS and hormones - intercalated disks that connects them - desmosomes (mechanica...

what connective tissue is best described as surrounding 10-100 muscle fibers seperating them into bundles known as fasicles? a- endomysium b-supramysium c-perimysium d-epimysium Answer: perimysium QUESTION The muscle fiber (cell) is an important part of the organization of muscle tissue in a skeletal muscle. The organization of muscle tissue from smallest to largest is? Answer: Filament, myofibril, fiber, fascicle, skeletal muscle QUESTION What is ...

NASM FINAL EXAM QUESTIONS AND CORRECT ANSWERS 2024/2025 ALREADY GRADED A+. 2 / 23 1. After leaving the left ventricle, blood enters which of the following struc-tures? Select one: a. Superior vena cava b. Aorta c. Inferior vena cava d. Pulmonary artery: Aorta 2. Which of the following joints is between the metacarpals and phalanxes? Select one: a. Condyloid b. Pivot c. Saddle d. Hinge: Condyloid 3. According to continuing education requirements, which of the following istrue? Se...

ANP 319 LAB PRACTICAL 2 EXAM 2024 WITH 100% CORRECT ANSWERS Sarcomere anatomy (what each is made of) - correct answer Z-line: made of alpha actin, establishes ends of sarcomere and is actin anchor point. I-Band: Segment of only actin H-zone: Segment of only myosin A-Band: Segment of myosin and its actin overlap M Line: Innervates the sarcomere? establishes center. Made of *Myomesin* What gets shorter and what doesnt when sarcomere contracts - correct answer Does: Sarcomere (z line to z...

what does the SR store - proteins and calcium what is the role of the transverse tubules in the muscle fiber - allow inside of muscle to communicate with the outside of the muscle how is a sarcomere measured - from z-disc to z-disc what is contained in the I band of the sarcomere & what color is the band - thin filaments titin z-disc light (isotropic) what is contained in the A band of the sarcomere & what color is the band - thick filaments thin filaments dark (scatters lig...

Phosphatase correct answers This myosin-actin interaction forms the basis of the cross-bridge cycle (CBC), which causes muscle contraction, as in skeletal -bridge cycling (CBC) requires phosphorylation of the myosin light chain (LC20). A .............. is an enzyme that removes a phosphate group from its substrate composed of actin and are dynamic and are lengthen by polymerization or shortened by depolarization correct answers microfilaments are provide strucule support for the cell ...

BPK 105 Exam Questions and Answers 2024/2025 | A+ GRADED 100% VERIFIED What is actin? Actin is a thin protein filament in muscle fibers that works with myosin for muscle contraction. What is myosin? Myosin is a thick protein filament in muscle fibers that interacts with actin to cause muscle contraction. What is a sarcomere? A sarcomere is the basic contracting unit in a muscle fiber, made of actin and myosin. What is troponin? Troponin is a protein on actin filaments; it binds calcium a...