Extensor Carpi Radialis Longus and Brevis: A pair of muscles located on the side of the forearm, allowing them to control extension and abduction of the wrist.Actions: Flexes the forearm at the elbow.Attachments: Originates from the humerus and attaches to the distal end of the radius.Brachioradialis: The brachioradialis is located in the superficial region of the forearm posterior compartment.Actions: Moves the ulna during pronation and extends the forearm at the elbow.Attachments: Originates from the humerus and attaches to the ulna.Aconeus: The aconeus is located in the superficial region of the forearm posterior compartment and is blended with the triceps brachii.The superficial layer of the posterior forearm contains seven muscles. It attaches to the mid region of the radius. Attachments: The pronator teres has two origins, one on the proximal end of the humerus and one of the distal end of the ulna.Actions: Flexion and abduction at the wrist.Attachments: Originates from the humerus and attaches to the base of the digits.Flexor Carpi Radialis: A long muscle originating near the elbow and passing through into the wrist.Attachments: Originates from the humerus and attaches to the base of the hand.Palmaris Longus: A long muscle originating near the elbow and passing through into the wrist.Actions: Flexion and adduction at the wrist.Attachments: Originates from the humerus and ulna and attaches to one of the carpal bones in the wrist.Flexor Carpi Ulnaris: A long muscle originating near the elbow and passing through into the wrist.Three muscles are located in the superficial layer of the anterior compartment of the forearm. Those located within the hand are referred to as intrinsic. Muscles of the forearm that act on the wrist and hand are referred to as extrinsic muscles, or external to the hand. Often providing the more forceful movements required. Muscles and tendons of the forearm and hand: The extrinsic muscles of the forearm are responsible for movement of the wrist and fingers. These muscles can generate highly variable force, from the strong grip required when lifting a heavy object to the delicate movements required to write. The wrist and hand exhibit a remarkable range of movement, key for grasping and interaction with objects. Muscles associated with the wrist include those of the forearm and hand that move the wrist and digits. Pronator quadratus: A square-shaped muscle located adjacent to the wrist.Flexor Pollicis Longus: A long, deep muscle responsible for flexing the thumb.Pronator Teres: A rectangular muscle that pronates the forearm.Flexor Digitorum Profundus: A long muscle originating near the elbow and passing through into the wrist, flexing the wrist and the most distant regions of the fingers.Flexor Carpi Radialis: A long muscle originating near the elbow and passing through into the wrist, attaching to the base of the digits (fingers).Flexor Carpi Ulnaris: A long muscle originating near the elbow and passing through into the wrist, attaching to one of the carpal bones in the wrist.Flexor Digitorum Superficialis: A key muscle controlling wrist and finger flex. Palmaris Longus: A long muscle originating near the elbow and passing through into the wrist, attaching to the base of the hand.The smoke compartment must be equipped throughout with an approved automatic sprinkler system.\) Horizontal spacing not less than 48 inches (1220 mm). Note: While one-inch is acceptable, a more conservative approach is to ensure a distance of no less than 6 inches (12.7 mm horizontal or vertical, measured from the center of the dispenser) between ABHR dispensers and source of ignition. (Sources of ignition: Appliances or equipment that, because of their intended modes of use or operation, are capable of providing sufficient thermal energy to ignite flammable gas-air mixtures.5 Examples include wall outlets, thermostats, and appliances.) One-inch (25 mm) distance (horizontal or vertical) above, to the side, or beneath an ignition source. One dispenser per room off corridors is NOT included in the calculation.ĪBHS dispenser distance from ignition sources (Smoke compartment: A space within a building enclosed by smoke barriers on all sides, including the top and bottom. Ten gallons (37.8 L) in-use outside of a storage cabinet within a single smoke compartment. Maximum quantity of ABHS allowed in-use (i.e., in dispensers) (The Centers for Disease Control and Prevention recommends that ABHS contain at least 60% alcohol.)ġ.2 liters (41 ounces, 0.32 gal) for dispensers in rooms, corridors, and areas open to corridors.Ģ.0 liters (67 ounces, 0.53 gal) for dispensers in suites of rooms separated from corridors.ġ8 oz., limited to Level 1 aerosols as defined by NPFA 30 B. Must not exceed 95% alcohol content by volume. Criteria for NFPA 101 Life Safety Code Requirements for the use of ABHS Dispensers Criteria
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