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Anglicanism is a family of Christian churches. The family includes the Church of England, the US Episcopal Church, and those holding the same essential doctrines. Anglicanism holds the Lambeth Quadrilateral 1888 Holy Scripture as the basis of all doctrine, the Nicene and Apostles' Creeds, Holy Baptism and Holy Communion, and the historic episcopate.
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Polygon is a term used in geometry to describe a closed plane figure with three or more straight line sides. Common polygons are figures such as the triangle, quadrilateral and the hexagon. A square is a regular polygon where the sides and all angles are equal.
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A trapezoid is a quadrilateral shape in which none of the sides are parallel.
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Grapsidae is a large family of crabs found all over the world with a quadrilateral carapace.
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The depressor labii inferioris (quadratus labii inferioris; quadratus menti) is a small muscle with a quadrilateral form. It originates from the mandible near the mental foramen and runs upward and inward to be inserted in the skin of the lower lip along with the orbicularis oris muscle. The muscle contains much yellow fat that is intermingled with the muscle fibres. The
depressor labii inferioris is innervated by the facial nerve (VII cranial nerve) and supplied by the facial artery. When in action, this muscle pulls the lower lip downward and slightly outward.
Research Depressor Labii Inferioris
The gluteus maximus is the most powerful and largest muscle in the body. It is a thick, fleshy, quadrilateral muscle that forms the major volume of the buttock. It originates from the ilium and the posterior surface of the sacrum and coccyx, descends downward and outward from its origin and wraps around the outer back corner of the pelvis to insert in the iliotibial band and the gluteal ridge of the femur. It connects the ilium, sacrum, and coccyx to the femur by tissues of the thigh. The gluteus maximus is innervated by the inferior gluteal nerve and supplied by the inferior and superior gluteal arteries. This muscle consists of coarse muscle fibres that powerfully extend the thigh at the hip joint and moves it away from the body, as when walking or running. It is also used to raise the body from a sitting position.
Research Gluteus Maximus
The internal oblique (obliquus internus abdominis) is a small, thin, deep muscle of the abdomen. It runs diagonally opposite underneath the external oblique. It has a quadrilateral form originating from the hip bone (crest of the ilium), and extending to the cartilage of the lower ribs (the tenth, elenenth, and twelfth ribs). It is innervated by the lower thoracic nerves and supplied the intercostal and lumbar arteries. This muscle protects a weak point in the abdominal wall and works with the external oblique to help twist the torso.
Research Internal Oblique
The levator labii superioris is a thin muscle with a quadrilateral form. It originates near the lower edge of the occular orbit (orbit of the eye) immediately above the maxillary foramen and is inserted in the muscular tissue of the orbicularis oris muscle of the upper lip. The levator labii superioris is innervated by the facial nerve (VII cranial nerve) and supplied by the facial artery. This muscle elevated the upper lip.
Research Levator Labii Superioris
The occipito-frontalis is a broad musculo-fibrous layer that cover the episkull. It consists of two thin layers of muscle. The occipital portion, sometimes called the occipitalis muscle, is quadrilateral in form and about an inch and a half in length. It originates from the occipital bone, covers the back of the skull and inserts in the galia aponeurotica. The frontal portion, sometimes called the frontalis, is also quadrilateral in form. It is broader and its fibres are longer. It originates from the galea aponeurotica, covers the forehead and inserts in the skin of the eyebrows and nose. The frontalis and occipitalis portions of the muscle are joined together by a thin, flat intermediate tendon called the galia aponeurotica. It is located above the occipito and frontalis muscle and covers the top of the skull. The occipito-frontalis muscle is innervated by the facial nerve and is supplied by the occipital artery. The galia aponeurotica works with the occipito- frontalis muscles to move the scalp. The frontalis muscle elevates the eyebrows
and draws the scalp forward. The occipitalis muscle draws the scalp backward.
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The pronator quadratus is a small, flat muscle with a quadrilateral form. It originates from the ulna and extends across the front of the radius and ulna and inserts in the shaft of the radius. It is innervated by the anterior interosseous, which branches from the median nerve, and is supplied by branches of the radial artery. This muscle helps to rotate the radius upon the ulna and thus assists in rotating the hand.
Research Pronator Quadratus
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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