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Terms in this set (33)
Each individual muscle fiber is surrounded by a delicate network off reticular fibers called ________________.
The muscle fibers bound together by the endomysium form a bundle called a _____________.
Fascicles are surrounded by connective tissue containing collagen and elastic fibers that supports the blood vessels and nerves that serve the fibers of the fascicles. This connective tissue is called the ______________?
The entire muscle is surrounded by dense irregular connective tissue that separates the muscle from the surrounding tissue and organs. This is called the ____________?
Muscle fiber = Muscle cell
sarcomere -> myofibril -> Muscle fiber (cell) -> Fascicle -> Muscle
When the attachment of a muscle to a bone is broad and forms a sheet it is called an _________________.
Skeletal muscle cells develop when hundreds of individual embryonic cells called ___________ fuse together.
The muscle cell plasma membrane is called the _____________ and the cytoplasm is called the ________________.
Skeletal muscles are multinucleate. The nuclei of the myoblasts that fuse to form the cell remain within the cell.
Endurance exercise, resist fatigue, increases blood supply to muscle, more mitochondria, more O2 storage, and metabolism.
resistance exercise, increases muscle size and strength. Increases in number of contractile filaments
The place of attachment of a muscle to the more stationary bone. Immovable or less movable.
The place of attachment of a muscle to the bone it moves
Skeletal muscle only ___________, it does not __________.
During contraction, the muscle _____________ site moves closer to the muscle __________ site.
The bulk of the muscle is proximal to the joint it crosses.
Movement is produced as the __________ site of the muscle is pulled towards the __________.
Coronal plane movement in which the body part is moved away from midline.
Coronal plane movement in which the body part is moved closer to midline.
Upwards movement of ankle. Lifting the foot so that the superior surface of the foot moves closer to the skin.
Downwards movement of ankle. Pointing the foot down.
Movement which turns the sole of the foot medially.
Movement which turns the sole of the foot laterally.
Forearm rotates laterally so that the palm faces upwards. Radius and ulna are parallel.
Forearm rotates medially so that the palm faces downwards. Radius crosses the ulna.
Movement in which the thumb and finger tips of the same hand are in contact.
Movement forwards, anteriorly in the sagittal plane that extends in length.
Movement backwards, posteriorly in the sagittal plane that shortens in length.
Medial and Lateral Deviation
Movement of the wrist medially or laterally in the coronal plane.
What arrangement of muscle fibers?
Found surrounding external opening
Close by contraction
In human anatomy, the _________________ muscle is a complex of muscles in the lips that encircles the mouth. Until recently, it was misinterpreted as a sphincter, or circular muscle, but it is actually composed of four independent quadrants that interlace and give only an appearance of circularity.
The ______________ is a muscle in the face that closes the eyelids. It arises from the nasal part of the frontal bone, from the frontal process of the maxilla in front of the lacrimal groove, and from the anterior surface and borders of a short fibrous band, the medial palpebral ligament.
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