Potential PHGY 215 Final Short Answer Questions
Top PHGY 215 Short Answer Questions for Exam
Success
Identify and describe the basis of muscular contraction at the level of the sarcomere, muscle
unit, and whole muscle to explain different ways skeletal muscles contract ✔✔-stretching and
shortening
-actin-myosin cross bridges, sarcomere shortening
-twitch and motor unit summation
-action potentials brought down to t-tubules, SR delivers ca +2 and atp to thin and thick
filaments
Differentiate between types of skeletal muscle fibres and draw connections between their
unique features and functions within the body. ✔✔Myofibrils, sarcomere
Explain the main processes involved in voluntary and involuntary motor control to determine
how damage to structures and/or pathways would affect movement ✔✔-voluntary: smooth
and cardiac muscles
-involuntary: skeletal muscles
Compare and contrast the features of skeletal, smooth, and cardiac muscle to understand
important structure-function relationships ✔✔-smooth muscles found in vessels, constant
contraction helps fluid move along pathways
-cardiac muscles are striated and have a single nucleus. Auto-rhythmic cells in heart create their
own constant action potential to contract heart muscles. Branched and thick in ventricles, thin
in aortas. Electro-mechanical organ
Top PHGY 215 Short Answer Questions for Exam
Success
Identify and describe the basis of muscular contraction at the level of the sarcomere, muscle
unit, and whole muscle to explain different ways skeletal muscles contract ✔✔-stretching and
shortening
-actin-myosin cross bridges, sarcomere shortening
-twitch and motor unit summation
-action potentials brought down to t-tubules, SR delivers ca +2 and atp to thin and thick
filaments
Differentiate between types of skeletal muscle fibres and draw connections between their
unique features and functions within the body. ✔✔Myofibrils, sarcomere
Explain the main processes involved in voluntary and involuntary motor control to determine
how damage to structures and/or pathways would affect movement ✔✔-voluntary: smooth
and cardiac muscles
-involuntary: skeletal muscles
Compare and contrast the features of skeletal, smooth, and cardiac muscle to understand
important structure-function relationships ✔✔-smooth muscles found in vessels, constant
contraction helps fluid move along pathways
-cardiac muscles are striated and have a single nucleus. Auto-rhythmic cells in heart create their
own constant action potential to contract heart muscles. Branched and thick in ventricles, thin
in aortas. Electro-mechanical organ
