What causes muscles to contract? - Socratic
2016年5月27日 · The process of the muscle contraction takes place in the protein filaments of the Sarcomere. Typically muscles move by a process called a contraction which causes the …
What neurotransmitter stimulates skeletal muscle contraction?
2017年9月16日 · The answer is acetylcholine . In vertebrates, nerve terminals at neuro-muscular junctions release acetylcholine and corresponding receptors are present on the cell membrane …
What is the role of potassium in muscle contraction?
2016年3月7日 · Potassium is important for electrical impulses that trigger muscles via nerves. Muscles contract because of electrical impulses from nerves. As potassium is important for the …
What is the role of the sarcoplasmic reticulum (SR) in muscle ...
2017年7月21日 · Primarily to store large amounts of "Ca"^(+2) ions for muscle contraction. It is a specialized type of endoplasmic reticulum in muscles cell which primarily functions to store …
Why does the lack of ATP in muscle cells cause the muscles
2016年6月24日 · Because ATP is needed to pump back calcium in endoplasmic reticulum (=sarcoplasmic reticulum) before the muscle cells can relax. Please also revise lessons on …
What muscle causes goose bumps? Which vertebrae don't have a …
2016年2月14日 · Arrector pili muscle. Atlas (C1) vertebra. The goose bumps or piloerection is caused by the contraction of arrector pili muscle. This is a tiny muscle in the skin. It is attached …
What happens to the actin and myosin filaments when a muscle
2017年10月27日 · According to Sliding Filament model of muscle contraction (proposed by H. Huxley, A.F. Huxley and their colleagues) following changes occur during muscle contraction. …
How does histamine affect smooth muscle? + Example - Socratic
2014年8月3日 · Histamine affects several receptors found in different tissues. Sometimes blocking the receptor and sometimes adding to it. Smooth muscle around bronchi in the lungs …
What function do calcium ions perform during the contraction of ...
2018年2月2日 · Expose myosin-binding sites on actin filament by displacing the tropomyosin present on actin filament. Calcium ions released by the sarcoplasmic reticulum play a vital role …
What is the role of ATP in muscle contraction? - Socratic
ATP is a source of energy in muscle contraction. It is pulling action of cross bridges of actin filament leads to contraction. When cross bridge engages actin molecule ATPase breaks ATP …