knee flexion and hip extension.
Biceps femoris also: knee external rotation and hip external rotation.
Semi tendinosus and Semi membranosus also: knee internal rotation and hip internal rotation.
hamstrings eccentric contraction causes knee extension and hip flexion, whilst the antagonist muscles are passive.
Extension of knee
A muscular contraction that causes a muscle to shorten is called a concentric contraction. A concentric contraction is a type of isotonic contraction.
A cramp is a sudden over-shortening of a muscle. Cramps are involuntary and, often, severe. They can be extremely painful.
strained hamstrings are caused when a hamstring is strained
An eccentric contraction is one that causes a muscle to lengthen.
because when an object hit the water vertically it makes a wave travel through the water (for every action there is an equal and opposite re-action) so this energy is displaced and dispersed by means of a wave.
due to contraction of heart
Exfoliation is primarily caused by a combination of thermal expansion and contraction due to daily temperature fluctuations. The heating of rock during the day causes expansion, while cooling at night causes contraction. This continuous expansion and contraction weaken the rock, leading to exfoliation.
Expansion and contraction
left ventricular contraction
The stimulus that travels from the motor neuron to skeletal muscle is an electrical signal called an action potential. This action potential causes the release of neurotransmitters, specifically acetylcholine, which then stimulates muscle contraction.
Insufficient pressure on the flask during processing causes porosity in denture.