Muscular System 1
The endomysium is the connective tissue that surrounds each
muscle fiber
Muscles use a lot of energy as ATP, so what organelle should they have a lot of?
mitochondria
Which joint has a fluid-filled cavity.
synovial
Cords of dense connective tissue that connect muscles to bone are called
Tendons
A contraction caused by a single brief stimulus is known as a
twitch
What group of muscles are on the posterior side of the thigh and inferior to the gluteus maximus?
hamstrings
Nearly all are functionally classified as synarthrotic.
Fibrous
What type of joint makes your thumb opposable?
saddle
The prime mover in inspiration is the
diaphragm
List 3 ways muscles can increase the force of their contractions.
Increase the frequency of motor neuron (and thus motor unit) stimulation
Increase the number of motor units (and thus muscle fibers) stimulated
Increase the size of the muscle fibers so that more tension can build up
All are functionally classified as diarthrotic.
Synovial
What joint allows for supination and pronation?
pivot
The quadriceps are the prime movers in extension and are antagonized by the
hamstrings
What are the 3 types of connective tissues that wrap around different parts of the muscles?
Epimysium
Perimysium
Endomysium
This includes the discs between your vertebrae
Cartilaginous
What type of joint is the elbow?
hinge
What is the main muscle of the cheek?
buccinator
Summarize the sliding filament model. Be sure to mention myosin and actin in your answer to receive credit.
The heads of the thick myosin filament heads grab on to the thin actin filaments.
Pulls the thin ones to slide past the thick ones more overlap of the actin and myosin filaments a shortening of the sarcomere
Sutures, syndesmoses, and gomphoses are examples of this.
Fibrous
Which joint allows for the most maneuverability of all the joints?
ball-and-socket