Answer:
The sarcoplasmic reticulum contain calcium ions in skeletal muscles which is involved in muscle contraction.
Explanation:
Sarcoplasmic reticulum is an intracellular system of closed saclike membranes involved in the storage of calcium in skeletal muscle cells. The sarcoplasmic reticulum regulates the concentration of calcium and determine muscle contraction.
Geothermal plants rely in energy from hot springs to produce electricity so the correct answer is B.
Answer:
aid in maintaining proper posture.
Explanation:
Stretch reflexes are the monosynaptic reflexes. These reflexes are produced by tapping on tendons attached to muscles at the elbow, wrist, knee, and ankle joints. One of the functions of the stretch reflex is to help maintain posture. For example, when a standing person begins to lean forward, stretching of calf muscles initiate the stretch reflexes. These reflexes cause the calf muscles to contract to restore the body’s upright posture. Similarly, stretch reflexes also occur in the muscles of the shin when a standing person begins to lean backward.
