Though the myofibrils within a muscle fiber run the length of the cell, they are actually composed of groupings of ________ (protein filaments).
Fill in the blank(s) with the appropriate word(s).
myofilaments
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Primary bronchi enter their respective lungs along with pulmonary vessels, nerves, and lymphatics at which region?
A) base B) apex C) hilum D) cardiac notch E) superior lobe
Bones and muscles function as mechanical devices called
A) syncytia. B) levers. C) ladders. D) lifts.
Synovial fluid is classified as interstitial fluid and is located inside certain joints where it serves as a shock absorber
Indicate whether the statement is true or false
In fetal circulation, blood bypasses the lungs by flowing through the ________
A) ligamentum venosum and ligamentum arteriosum B) fossa ovalis and umbilical arteries and vein C) foramen ovale and ductus arteriosus D) ductus venosus and ductus arteriosus E) umbilical vein and umbilical arteries