Answer:
The correct answer will be:
1. Acetylcholine binds to receptors on the motor end plate
2. Chemically-regulated ion channels open, causing depolarization
3 End plate potentials trigger action potential(s).
4. Transverse tubules convey potentials into the interior of the cell
5. Ca++ is released from the sarcoplasmic reticulum
6. Ca++ binds to troponin, pulling on tropomyosin
7. Binding sites on actin are uncovered, allowing myosin to bind and carry out power strokes
8. Force increases.
9. Ca++ is pumped (re-sequestered) into the sarcoplasmic reticulum
10. Force decreases.
Explanation:
The muscle contraction is a highly controlled mechanism which begins at the neuromuscular junction with the release of the acetylcholine neurotransmitter. This neurotransmitter causes the depolarization of the membrane by binding to the receptors of the motor end plate which generates an action potential. This action potential is transmitted via T-tubules from sarcolemma to the sarcoplasmic reticulum.
The sarcoplasmic reticulum releases calcium ions which binds to the troponin protein. This troponin removes the protein tropomyosin from the actin causing the rotation of the tropomyosin exposing the binding sites for myosin. The myosin binds to the actin using energy from the ATP which pulls the actin causing contraction. Another ATP binds the myosin head which weakens the bond between myosin and actin which releases the myosin which decreases the force between them decreases and the muscles relax.
A combination of downward pressure AND friction. It occurs at the deeper layers of tissue resulting in cell deformation and cell death
Answer:
Persian-speaking scholars have been active in furthering knowledge in fields of science and technology, such as astronomy, chemistry, anatomy, biology, botany, cosmology, mathematics, engineering, and architecture. Ancient Sassanid Persia was home to some of the earliest universities and libraries of the ancient world.
she promoted the publication of books about nursing and health care accurately describes one of her accomplishments, florence nightingale was a nursing pioneer who challenged prejudices against women and elevated the status of all nurses.
Enhancing quality of life via improved health is the primary goal of healthcare. To maintain their valuation and be able to continue operating, commercial enterprises concentrate on making a profit. To live up to its commitment to society, health care must prioritise generating social profit. (as in medicine, dentistry, clinical psychology, and public health) Hospitals, medical devices, clinical trials, outsourcing, telemedicine, medical tourism, health insurance, and medical equipment all fall under the category of healthcare. Due to its expanding coverage, services, and rising investment by both public and private entities, the Indian healthcare system is expanding quickly.
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