Answer:
by the sarcoplasmic reticulum's calcium ion pumps
Explanation:
Rigor mortis or postmortem rigidity, is a state caused by chemical changes in the muscles that occur post mortem and cause the limbs of the corpse to stiffen.
This occurs because after death, there is no cellular respiration and consequently, no oxygen nor ATP (ATP is required for the muscle relaxation).
Calcium enters the cytosol after death because it is released due to the deterioration of the sarcoplasmic reticulum and due to the breakdown of the sarcolemma. Ca2+ ions activate the formation of actin-myosin cross-bridging necessary for the contraction. Muscles are unable to relax, because myosin heads continue to bind with the active sites of actin and there is no ATP to destabilize the myosin-actin bond.
Answer:
Muscles - skeletal, smooth, and cardiac.
Location
Skeletal - This is located between bones.
Smooth - walls of hollow visceral organs ( such as the liver, pancreas, and intestines.)
Cardiac - the heart.
Explanation:
This is my FAVORITE thing to learn about. but it's some people's challenges so I thought I could help them out.
Because it could harm wildlife.
Answer:
a
Explanation:
they're water loving and water fearing
