head - uscles of the Head, eck, and orso uscles of the...

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Unformatted text preview: uscles of the Head, eck, and orso uscles of the Head, eck, and orso Danil Hammoudi.MD Danil Hammoudi.MD uscle iber/Nerve erminal uscle iber/Nerve erminal motor end plate motor end plate A-band band Z-line line sarcolemma sarcolemma motor neuron motor neuron myofibril myofibril sarcomere sarcomere I-band band endomysium endomysium Some definition Some definition aponeurosis- A sheetlike fibrous membrane, resembling a flattened tendon, that serves as a fascia to bind muscles together or as a means of connecting muscle to bone. any of the deeper and thicker fascia that attach muscles to bones; resemble flattened tendons, fascia - a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc Ligament: A ligament is a tough band of connective tissue that connects various structures such as two bones. "Ligament" is a fitting term; it comes from the Latin "ligare" meaning "to bind or tie. aponeurosis- A sheetlike fibrous membrane, resembling a flattened tendon, that serves as a fascia to bind muscles together or as a means of connecting muscle to bone. any of the deeper and thicker fascia that attach muscles to bones; resemble flattened tendons, fascia - a sheet or band of fibrous connective tissue separating or binding together muscles and organs etc Ligament: A ligament is a tough band of connective tissue that connects various structures such as two bones. "Ligament" is a fitting term; it comes from the Latin "ligare" meaning "to bind or tie. Tendon: The tissue by which a muscle attaches to bone. A tendon is somewhat flexible, but fibrous and tough. Muscles of the head Muscles of the head Epicranius.: Occipitofrontalis The epicranius covers the forehead, the top of the skull, and the back of the skull. It has two bellies, joined in the middle by a large aponeurosis [ galea aponeurotica ( epicranial aponeurosis ) ] . Its primary action is to raise the eyebrows. Orbicularis oculi. The primary action is to close the eye. Orbicularis oris. The primary action of this muscle is to close or purse the lips. This muscle is used when whistling or kissing. Masseter* . The primary action of this muscle is to elevate the mandible. This muscle originates on the zygomatic arch and maxilla, and it inserts on the angle and Epicranius.: Occipitofrontalis The epicranius covers the forehead, the top of the skull, and the back of the skull. It has two bellies, joined in the middle by a large aponeurosis [ galea aponeurotica ( epicranial aponeurosis ) ] . Its primary action is to raise the eyebrows. Orbicularis oculi. The primary action is to close the eye. Orbicularis oris. The primary action of this muscle is to close or purse the lips. This muscle is used when whistling or kissing....
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This note was uploaded on 10/18/2010 for the course BIO 2402 taught by Professor Opara during the Spring '10 term at Lone Star College.

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head - uscles of the Head, eck, and orso uscles of the...

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