Download Anatomy of the Muscular System | BIOL - Human Anatomy & Physiology and more Quizzes Physiology in PDF only on Docsity!
Superficial to Deep, what are the connective
tissue components?
- Epimysium ->Course2) Perimysium ->Tough3) Endomysium ->Delicate TERM 2
How many muscles are in the human
body?
DEFINITION 2 600 TERM 3
What are all the functions of the muscles?
DEFINITION 3 movement posture joint stability heat production TERM 4
Describe an Isometric Contraction?
DEFINITION 4 Contraction in which the muscle length remains the same but the tension increases. TERM 5
another term we use for white
fibers?
DEFINITION 5 Fast twitch fibers.
Define Rigor Mortise?
Stiffing of Skeletal muscles shortly after death TERM 7
What percentage of our body weight is
muscle?
DEFINITION 7 40-50% TERM 8
Name of the connective tissue that develops
muscle fibers?
DEFINITION 8 Surrounds bundles = perimysium TERM 9
What is the covering of an individual muscle
fiber, what is its name?
DEFINITION 9 Endomysium TERM 10
If a muscle contracts at the same time as a
prime mover, what do we call it?
DEFINITION 10 Synergists
Name of the muscle that shrugs your
shoulders?
Trapezius TERM 17
Name of the muscle that both extends and
adducts the upper arm?
DEFINITION 17 Latissimus Dorsi TERM 18
What body part do the muscles on the lower
leg move?
DEFINITION 18 Feet TERM 19
Which body systems are involved in
maintaining posture?
DEFINITION 19 Nervous systemrespiratory digestive all affect posture. TERM 20
Origin
DEFINITION 20 Origin: Point of attachment that does not move when the muscle contracts.
Insertion
Insertion: Point of attachment that moves when the muscle contracts TERM 22
Most common lever in the body?
DEFINITION 22 Third class lever TERM 23
Make sure you know difference between
myofibrils and myofilaments?
DEFINITION 23 Myofilaments at the individual thin and thick filaments (actin, myosin parts). Myofibrils CONTAINthe myofilaments. These are groups of the myofilaments. TERM 24
Name we give the smallest contractile unit of
the muscle?
DEFINITION 24 Sarcomere TERM 25
What is the word to describe abilities of a
muscle to respond to a nervous stimuli
DEFINITION 25 Excitability
Attempting to pick up an object to heavy
would cause what kind of contraction
Isometric muscle contractin TERM 32
Graded strength principle, what does it state?
DEFINITION 32 That muscles can produce different degrees of strength, depending on how many fibers are recruited (because of ATP availability and intensity and frequency of nervous systemstimulation). TERM 33
Painful muscle contractions often called
"involuntary twitches", what is the lay term?
DEFINITION 33 Cramps -> Muscle spasm TERM 34
Characteristics of the muscle cell that directly
causes movement?
DEFINITION 34 Myofilaments TERM 35
Glucose can be stored in the muscles as
what?
DEFINITION 35 Glycogen.
Where in the body is lactic acid converted
back to glucose?
Liver TERM 37
Describe an isometric contraction?
DEFINITION 37 Contraction in which the muscle length remains the same but the tension increases TERM 38
Muscles will usually contract to what percent
of their length?
DEFINITION 38 80% TERM 39
What is the term for a bruise?
DEFINITION 39 Contusion TERM 40
What is the difference between a sprain,
strain and a contusion?
DEFINITION 40 Sprain: Stretch or tear of one or more ligaments.Strain: Stretching injury to a muscle or muscle tendon unitContusion: Least serious, bleeding into soft tissue.
Where do muscles that move the upper arm
originate?
Clavicle and Scapula
