The Muscular System: Skeletal Muscle Tissue Fill in the characteristics of the t
ID: 3511172 • Letter: T
Question
The Muscular System: Skeletal Muscle Tissue Fill in the characteristics of the three muscle types: Muscle Type Shape of cell W of nuclei Striations Control vesen ricent 2. What ataches muscles to bone? 3- 4. endoplasmic reticulum in muscle cell intracellular fluid around organelles plasma membrane of muscle cell Myofibrils consist of contractile filaments. Name the two types and what proteins they are composed of: The whole muscle is composed of muscle cells (fibers) grouped in bundles called Match the following three terms with their definitions: Sarcolemma Sarcoplasmic reticulum Cytosol 5. composed of composed of 6. What happens to these areas during contraction? Z line (disc) H zone 7. Organization of muscle. Put the following components in order, from smallest to largest: fascicle myofibril myofilament muscle muscle fiber (cell) The Muscular System: Neuromuscular Junction I. Synaptic vesicles in the axon terminal of a motor neuron contain what
Explanation / Answer
2. tendon
3. fasciculi
4. sarcolemma - plasma membrane of muscle cell
sarcoplasmic reticulum- endoplasmic reticulum in muscle cell
cytosol- intracellular fluid around organelles
5. Actin filaments composed of three proteins as Actin, tropomyosin and troponin.
Myosin filaments consisting of myosin molecule protein.
6.Z lines- It approaches the ends of the myosin filaments or comes closer.
H zone- It is shortened and reduced.
sarcomere- overall contraction due to gliding of actin filaments down between the myosin filaments towards the mid of H zone.
7. muscle fibre (cell) -fascicle -myofilament- myofibril- muscle.
1. neurotransmitter- acetacetylcholine.