GENERAL ANATOMY
MUSCLE ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Muscle fiber is wrapped in endomysium
|
|
|
Multiple fibers are bundled together in a fascicle and wrapped in perimysium
|
|
|
Multiple fasicles are wrapped together in epimysium
|
|
|
The epimysium extends to form an aponeurosis or a tendon
|
Detailed explanation-1: -Each bundle of muscle fiber is called a fasciculus and is surrounded by a layer of connective tissue called the perimysium. Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium.
Detailed explanation-2: -The endomysium, a fine layer of connective tissue, wraps each muscle fiber and separates it from neighboring fibers.
Detailed explanation-3: -The first step in the process of contraction is for Ca++ to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands. This allows the myosin heads to bind to these exposed binding sites and form cross-bridges.
Detailed explanation-4: -Each skeletal muscle consists of thousands of muscle fibers wrapped together by connective tissue sheaths. The individual bundles of muscle fibers in a skeletal muscle are known as fasciculi. The outermost connective tissue sheath surrounding the entire muscle is known as epimysium.