Answer:
<u>Static</u><u> </u><u>friction</u><u> </u><u>:</u>
The frictional force resists force that is applied to an object, and the object remains at rest until the force of static friction is overcome. In kinetic friction, the frictional force resists the motion of an object.
<u>Rolling</u><u> </u><u>friction</u><u> </u><u>:</u>
Rolling friction occurs when a wheel, ball, or cylinder rolls freely over a surface, as in ball and roller bearings. The main source of friction in rolling appears to be dissipation of energy involved in deformation of the objects.
Answer:
The correct answer is B. Proximal
Explanation:
Tooth have five surfaces distal, facial, Incisal, Lingual and mesial. Mesial surface is the tooth surface which is present towards the front portion and lingual surface towards back portion of mouth.
So the area where mesial surface of one tooth touches the lingual surface of another tooth is called proximal surface. There is a point where the two teeth that are adjacent touches each other called contact point of proximal surface. It becomes wider due to chewing and grinding with time.
Answer: d. autonomic nervous system
Explanation:
The dilation of the pupil occurs due to the radial muscles. This is controlled by the autonomic nervous system. The autonomic nervous system consists of sympathetic and parasympathetic nervous system. The sympathetic nervous system controls the dilation of pupil whereas the parasympathetic nervous system controls the contraction of pupil.
A dilation response generally involves the widening of the pupil that may be caused by the adrenaline and drugs like cocaine, MDMA, amphetamines, hallucinogens and dissociatives.
Answer:
Quadratus lumborum
Explanation:
Quadratus lumborum, commonly known as back muscle is a posterior abdominal wall muscle. The shape of the muscle is irregular as well as quadrilateral and broader below than above and is the the deepest abdominal muscle.
<u>The muscle originates by the aponeurotic fibers into iliolumbar ligament and internal lip of iliac crest for about 5 centimeters . It then inserts from the lower border of last rib (rib 12) for about the half of it's length and also by the four small tendons from apices of transverse processes of upper four lumbar vertebrae. (L1-L4).</u>
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During contraction of heart muscle cells C) some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium
