The Muscular System

Question 1

what are the types of muscles and their function?

Answer 1

smooth: lines walls of internal organs and blood vessels and is responsible for involuntary organ movement
skeletal: attachment to bones
cardiac: involuntary contraction of the heart muscles to pump blood

Question 2

what is an example of skeletal muscle?

Answer 2

achilles tendon (back of the leg)

Question 3

what are Sharpey’s fibers?

Answer 3

fibers that connect the periosteum to the tendon

Question 4

what is the largest muscle?

Answer 4

gluteus maximus

Question 5

structure of muscles

Answer 5

skeletal muscle –> muscle fascicle –> muscle fibers (sarcomeres) –> myofibril –> myofilaments

Question 6

properties of skeletal muscles

Answer 6

excitability
contractability
extensibility
elasticity

Question 7

layers of skeletal muscles

Answer 7

epimysium: surrounds and provides structure to the muscle.
perimysium: surrounds and organizes muscle fascicles.
endomysium: surrounds each muscle fiber.
sarcolemma: plasma membrane of muscle fiber.
sarcoplasm: cytoplasm of muscle fiber.
myofibril: extend the entire length of skeletal muscle fiber.

Question 8

structure of smooth muscle

Answer 8

consists of thick and thin filaments that are not arranged into
sarcomeres giving it a non-striated pattern