Actin filament - Study guides, Class notes & Summaries

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

A&P 1 Final Exam, Straighterline Anatomy and Physiology 1, Straighterline A&P 1 Cumulative Final Exam 2024 What is the smallest level of organization in the body that contains the body's genetic information? Select one: a. chemical b. cellular c. tissue d. organism - Answer-B. Cellular The cellular level includes the nucleus, an organelle that contains the body's genetic information. Which is an example of a normally occurring positive-feedback mechanism? Select one: a. elevated bl...

Exam 1: BIOS 252 / BIOS252 (Latest 2024/ 2025 Update) Anatomy and Physiology II Exam Review| Questions and Verified Answers| 100% Correct| Grade A - Chamberlain Q: What is the name of the chemical that is secreted by the synaptic end bulb and is used to stimulate or inhibit another cell? A. Chemical receptors B. Meninges C. Neurotransmitters D. Saltatory conduction Answer: C. Neurotransmitters Q: Using stimulation like pressure or stretching to open a cell membran...

Acid PH - 1-7 Acids - Increase the amount of hydrogen ions in a solution Actin filament - twisted protein fibers that are responsible for cell movement Adhesion - the ability of water molecules to cling to other polar surfaces Alleles - Different forms of a gene Amino acids - monomers of proteins Amino groups are - polar amphipathic - having both a hydrophilic region and a hydrophobic region Anabolism - Metabolic pathways that construct molecules, requiring energy. Analogous structure -...

A&P 1 Final Exam, Straighterline Anatomy and Physiology 1, Straighterline A&P 1 Cumulative Final Exam 2024 What is the smallest level of organization in the body that contains the body's genetic information? Select one: a. chemical b. cellular c. tissue d. organism - Answer-B. Cellular The cellular level includes the nucleus, an organelle that contains the body's genetic information. Which is an example of a normally occurring positive-feedback mechanism? Select one: a. elevated ...

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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 ...

Which steps involved in the contraction of a skeletal muscle require binding and/or hydrolysis of ATP? I Dissociation of myosin head from actin filament II Attachment of myosin head to actin filament III Conformational change that moves actin and myosin filaments relative to one another IV Binding of troponin to actin filament V Release of calcium from the sarcoplasmic reticulum VI Reuptake of calcium into the sarcoplasm A. I, II, and III only B. II, III, and IV only C. I, III, and ...

What are the three main components of the cytoskeleton and what are their main functions? correct answers Microtubules, microfilaments and intermediate filaments that help form the cytoskeleton to create stability, structure, and allow movement What are the main similarities and differences between the three components of the cytoskeleton? correct answers Microfilaments: flexible, smallest, regulate motion, help stabilize, polymerized from monomers to polymers Microtubules: less flexible, ...

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...