ANAT 260 LAB Midterm exam with 100% correct answers

ANAT 260 LAB Midterm exam with 100%
correct answers


MUSCLES


What are the two main functions of skeletal muscle? -
🔹CORRECT ANSWERS ✔✔1. Locomotion
2. Generate Heat


Why is skeletal muscle special? - 🔹CORRECT ANSWERS ✔✔We
have voluntary control over it


Structure of a sarcomere: Z Disc - 🔹CORRECT ANSWERS ✔✔-
end points of a sarcomere
- where actin connects


Structure of a sarcomere: I Band - 🔹CORRECT ANSWERS
✔✔only contains thin filaments (actin)


Structure of a sarcomere: H Zone - 🔹CORRECT ANSWERS



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,✔✔only contains thick filaments (myosin)
- from actin to actin


Structure of a sarcomere: A Band - 🔹CORRECT ANSWERS
✔✔contains both thin and thick filaments (actin and myosin)
- from end to end of a myosin


Structure of a sarcomere: M Line - 🔹CORRECT ANSWERS
✔✔mid point of a sarcomere
- thick filaments linked by accessory proteins


Sarcoplasmic reticulum - 🔹CORRECT ANSWERS ✔✔- cover
myofibrils
- stores Calcium


Triad - 🔹CORRECT ANSWERS ✔✔1 T tubule + 2 terminal
cisternae


T Tubule - 🔹CORRECT ANSWERS ✔✔projection of the
sarcolemma into the interior of the cell
- involved in Calcium being released




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, Terminal cisternae - 🔹CORRECT ANSWERS ✔✔enlarged areas
of the sarcoplasmic reticulum surrounding the t tubules.


What 2 things are needed for muscle contraction? - 🔹CORRECT
ANSWERS ✔✔1. ATP (mitochondria)
2. Calcium (sarcoplasmic reticulum)


What is the order of muscle structures from largest in diameter to
smallest? - 🔹CORRECT ANSWERS ✔✔1. Muscle Belly
2. Fascicles
3. Muscle Fibers (cells)
4. Myofibrils
5. Myofilaments


What is the lining of the muscle belly called? - 🔹CORRECT
ANSWERS ✔✔Epimysium


What is the lining of a muscle fascicle called? - 🔹CORRECT
ANSWERS ✔✔Perimysium




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