structure of skeletal muscle

Skeletal muscles have an abundant supply of __________and _______. This is directly related to the primary function of skeletal muscle, ______. Before a skeletal muscle fiber can contract, it has to receive an impulse from a _____ ______. Generally, an artery and at least one vein accompany each nerve that penetrates the epimysium of a skeletal muscle. Branches of the nerve and blood vessels follow the _______ _______ ___________of the muscle of a nerve cell and with one or more minute blood vessels called ________.

-blood vessels -nerves -contraction -nerve cell -connective tissue components - capillaries

Commonly, the __________, ______________, and ___________ extend beyond the fleshy part of the muscle, the belly or gaster, to form a thick rope-like tendon or a broad, flat sheet-like ____________. The tendon and _________ form indirect attachments from muscles to the periosteum of bones or to the connective tissue of other muscles. Typically a muscle spans a joint and is attached to bones by tendons at both ends. One of the bones remains relatively fixed or _____ while the other end moves as a result of _________ _______________.

-epimysium -perimysium -endomysium -aponeurosis -aponeurosis -stable -muscle contraction

Fascia, connective tissue outside the epimysium, surrounds and separates the _______. Portions of the epimysium project inward to divide the muscle into ________. Each ______________ contains a bundle of ___________. Each bundle of _________ is called a __________ and is surrounded by a layer of connective tissue called the ________. Within the __________, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the _________.

-muscles -compartments -compartment -muscle fibers -muscle fiber -fasciculus -perimysium -fasciculus -endomysium

Skeletal muscle cells (fibers), like other body cells, are _____ and _____. The connective tissue covering furnish _____ and ______ for the delicate cells and allow them to ____________ ____ ____ ______ ____________. The coverings also provide pathways for the passage of ___________ and __________.

-soft -fragile -support -protection -withstand the forces of contraction -blood vessels -nerves

structure of the muscle:

bone, tendon, epimysium, endomysium, fascicle, muscle fiber, blood vessel, pericardium

skeletal muscles are _____ in shape and some _____.

broad, narrow

Each skeletal muscle fiber is a single ______?

cylindrical muscle cell

An individual skeletal muscle may be made up of hundreds, or even thousands, of

muscle fibers bundled together and wrapped in a connective tissue covering. Each muscle is surrounded by a connective tissue sheath called the epimysium.

a whole skeletal muscle is considered an ________ of the __________ __________ .

organ, muscular system

in some muscles the fibers are __________ to the long axis of the muscle; in some they _____________ to a narrow attachment; and in some they are ___________.

parallel, converge, oblique

skeletal muscles vary considerably in....

size, shape, and arrangement of fibers -they range from extremely tiny strands (such as the stadium muscle of the middle ear) to large masses (such as the muscle of the thigh)

each organ or muscle consists of ...

skeletal muscle tissue, connective tissue, nerve tissue, and blood or vascular tissue