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 action causes a muscle to contract? - Socratic
2016年7月24日 · This causes depolarisation on muscle fibre. Depolarisation opens Na channels, i.e. Na flows from extracellular fluid into the cells (muscle fibres). That causes a series of …
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 …
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 is a motor point in the central nervous system? | Socratic
2016年7月10日 · The electrical impulse mimics the action potential coming from the central nervous system and causes the muscle to contract. The electrode is usually a pad that is …
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 …
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 is the role of ATP in muscle contraction? - Socratic
2018年3月19日 · 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 …
How is heat generated during muscle contraction? - Socratic
2018年7月7日 · Heat is generated due to the hydrolysis of ATP to ADP and P. Aerobic cellular respiration, which produces ATP, occurs in the mitochondria of cells. Muscle cells have a large …