The Kell blood group system was discovered in 1946 and was named after Mrs. Kellner, the mother of first baby discovered to be affected by Hemolytic Disease of the Newborn (HDN) due to Kell antibodies. The Kell blood group system is classified into subtypes according to the type of antigens on red …
Air pressure is measured with an instrument called a mercury barometer or the aneroid barometer. On maps, places of equal atmospheric pressure are joined together by lines called ISOBARS. Meaning of Atmospheric Pressure Atmospheric pressure is the weight of the volume of air which extends from the ground surface to the outermost …
Teres Major Origin and Insertion The Teres major is a broad and cord-like muscle that originates from an oval area on the dorsal surface of the inferior angle of the scapula and passes upwards and laterally to end as a flat tendon that is inserted into the medial lip of the intertubercular …
Infraspinatus Muscle Anatomy The infraspinatus is a muscle of the scapulohumeral region that is also part of the SITS muscles or the Rotator cuff muscles. The infraspinatus located medially in the infraspinous fossa of the posterior aspect of the scapula and occupying three quarters of the infraspinous fossa. The infraspinatus is partly …
Supraspinatus Action The Supraspinatus muscle helps to initiate the abduction of the arm before the Deltoid muscle takes over. The supraspinatus also supports the head of the humerus against the glenoid cavity and therefore gives the joint stability during movement caused by actions of other muscles such as the deltoid. Supraspinatus Origin and Insertion …
The Deltoid is a powerful and triangular muscle located at the shoulder region; as the name implies, the deltoid has the shape of an inverted Delta of the Greek alphabets; the deltoid is part of the six scapulohumeral muscles that pass from the scapula to the humerus and act on the shoulder …
The Trapezius is part of the superficial posterior thoracoappendicular muscles (which are the extrinsic shoulder muscles) and the left and right Trapezius muscles form a diamond shape or Trapezoid shape from which the muscle got its name. The Trapezius is a large flat muscle and the most superficial of the upper part …
Brachial Plexus Anatomy Brachial plexus is a major network of nerves that innervate or supply the upper limbs – most nerves in the upper limb arise from the brachial plexus; there is one brachial plexus on the left and another on the right, both supplying the two upper limbs. The Brachial plexus …