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:
The humanistic approach emphasizes the personal worth of the individual, the centrality of human values, and the creative, active nature of human beings. The approach is optimistic and focuses on the noble human capacity to overcome hardship, pain and despair.
Answer:
The correct answer will be option- C.
Explanation:
Dehydration is the loss of water from the body in the response to which body undergoes physiological and metabolic changes as:
1. The hypothalamus produces Anti-diuretic hormone or ADH from the posterior of the pituitary gland which produces its effect on the kidney to reabsorb the water.
2. The body produces renin, angiotensin II and aldosterone which increases the permeability of the distal convoluted tubule and the collecting ducts.
3. The extracellular blood or the blood becomes more concentrated due to dehydration.
Thus, option- C which is that renal tubules decrease water reabsorption is the incorrect option as water absorption is increased in the kidney.
Answer:
False
Explanation:
They carry deoxygenated blood away from the right side of the heart and into the capillaries of the lungs for the purpose of gas exchange.
I hope this helps, and as always, I am joyous to assist anyone at any time.
