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.
Answer:
Elevate legs while sitting.The nurse should encourage the client to elevate her legs while sitting; this will prevent pooling and engorgement of veins in the lower extremities. Aerobic exercises do not help in preventing varicose veins. Folic acid intake is recommended in the first trimester to prevent congenital abnormalities. Increasing the intake of calcium helps in strengthening bones.
Explanation:
Answer:
The <u>tissue level</u> of organization is defined as a group of cells working together to perform a similar function
Explanation:
According to the hierarchical level of organization of human anatomy, a group of cells along with the extracellular matrix combine, ensemble and work together and perform a similar function at the tissue level of organization. Depending upon the location and polarity, cells group together and form a tissue.
The basic types of tissues formed by the grouping of similar cells include muscular, nervous, epithelial, and connective tissues. For ex., a group of cells combining to form epithelial tissues are found lining the skin and internal cavities with the main function to cover and protect the body surface as well as internal cavities.
Answer:
Having knowledge of the law, both federal and state laws, will hopefully prevent you from making a mistake that could cause any form of liability for your employer!
Explanation:
the last thing you would want is for your boss to fire you or charge a patients hospital bill to you because you didn't know that whatever you were doing or prescribing was against the law.
