Jet Streams, Causes, Direction, Map and Effects

What are jet streams? These are bands of powerful high-speed winds or currents of air that circulate in shifting flows from west to east direction at an altitude of about 8 to 15 kilometers above the earths surface. Jet streams are formed where there is a large temperature difference between two air …

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Atmospheric Temperature, Value, Average and Factors

What is Atmospheric Temperature? Atmospheric temperature is the temperature of the earths atmosphere measured at different levels. This is dependent on many factors such as clouds, latitude, incoming radiation, land surface, air, altitude, ocean currents, and water surface, etc. The reason for the warmth and the coldness of the atmosphere is due …

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Coracobrachialis Muscle: Action, Function, Origin and Insertion

Coracobrachialis is a muscle of the anterior compartment of the arm, found in the upper and medial part of the arm. It is also called Musculus Coracobrachialis; this muscle is a useful landmark in the arm for locating other structures in the arm such as identifying the musculocutaneous nerve which pierces this muscle …

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Rhomboid Minor Muscle Action, Insertion, Origin, Function and Test

The Rhomboid minor or Rhomboideus minor is also called the musculus rhomboideus minor and is one of the deep extrinsic shoulder muscles (the deep posterior thoracoappendicular muscles) the others being levator scapulae and rhomboid major. The Rhomboid minor is a narrow ribbon like muscle that lies parallel to the rhomboid major and arises from the C7 and …

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