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Myofilament are long tubular structures inside of muscle cells that are made up of shorter contractile sections called sarcomeres.
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What protein makes up the thick myofilament?
The thick myofilaments are formed from a protein called myosin.
What is the correct order of structures as you move from outside a muscle cell to deep inside it?
Fiber, Myofibril, Myofilament.
What is needed besides calcium for contraction to occur?
An action potential. It is the nerve impulse that enters into sarcomeres from the sarcoplasmic reticulum and provides the energy for the calcium ions to briefly bind to the troponin on the actin myofilament to allow for contraction to occur by bringing the Z-lines closer together.
How are the striations of a skeletal muscle produced?
Of the three types of muscle, cardiac, smooth and skeletal, skeletal is striated. Myocytes form myoblast which form myofibers. The myofibers are composed of myofibrils which are comprised of sarcomeres which is responsible for the muscles striated appearance.
What does ATP do in muscle contractions?
ATP is used to create energy for the muscles by one phosphate molecule breaking off and into the muscles for energy. This then leaves ADP (Adenosine di phosphate) which is just 2 phosphate molecules. The creatine phosphate (PCr) works with the ADP to recreate ATP (3 phosphate molecules). If there is a lack of creatine phosphate in the body we will not be able to engage in anaerobic activities or at least not very effectively.
The protein that makes up the thin myofilament?
protein that makes up thin myofilament
What is the order from largest to smallest myofibril fascicle myofiber myofilament?
myofilament myofibril myofiber fascicle muscle
What chemicals are involved with contracting muscles?
Actin (thin myofilament), myosin (thick myofilament), calcium, and ATP (energy).
The thin myofilament of the skeletal muscles is made o?
The thin myofilament of skeletal muscles is made of the globular protein called actin.
What protein makes up the thick myofilament?
The thick myofilaments are formed from a protein called myosin.
What is a myofilament with a knob like head?
Myosin
Actin- or myosin-containing structure?
myofilament
Which myofilament contains actin and myosin?
muscle
What is the myofilament with a knob like head?
Myosin
What is the order of fibers?
Fascicle (largest) Fiber Myobibril Myofilament (smallest)
What is the correct order of structures as you move from outside a muscle cell to deep inside it?
Fiber, Myofibril, Myofilament.
Which type of myofilament is composed of thick long complexes of protein molecules and have appendages known as bridges?
actin
