Chapter 8- Muscular System Flashcards
What is an erg?
Muscle that works with a prime mover to produce a movement
What is a calat
Membranous band that connects cardiac muscle cells
What is hyper?
: Enlargement of muscle fibers.
What is inter?
Membraneous band that connects cardiac muscle cells
What is laten?
Time between application of a stimulus and the beginning of a muscle contraction.
What is myo?
Contractile structure within a muscle cell
What is sacro?
Material (cytoplasm) within a muscle fiber.
What is syn?
muscle that works with a prime mover to produce a movement
What is tetan?
: Sustained muscular contraction
What is troph?
Enlargement of muscle fibers
Name the three types of muscles
Skeletal, Smooth & Cardiac
Is Skeletal muscle voluntary?
Yes
Some identifying features of this muscle are it is present, single nucleus, well developed transverse troubles seperating adjacent cells
Cardiac
Is smooth muscle voluntary or involuntary?
Involuntary
This muscle’s identifying features are absent; single nucleus lacks transverse tubules
Smooth
Is cardiac muscle voluntary or involuntary?
Involuntary
This muscle’s characteristics are present, many nuclei; well developed transverse, and a tubule system
Skeletal
What is a tendon?
A band of tough, inelastic fibrous tissue that connects a muscle with it’s bony attachment
What is a ligament?
A sheet or band of tough fibrous connecting bones or cartiliges at a joint or supporting an organ
What is neuromuscular junction?
Connection between a motor neuron and the muscle fiber
What’s a sacromere
The segment of a myofibril that extends from one Z line to the next Z line.
Is actin thick or thin?
Thin
Is myosin thick or thin
Thick
When minimal strength is required to cause a contraction… __________
Threshold strength
When a muscle appears to be at rest it’s fiber undergo sustained contraction
Muscle tone
When a regularly exercised muscle loses it’s ability to contract
Muscle Fatigue
Fine connective tissue sheath surrounding a muscle fiber
Endomysium
The external sheath of connective tissue surround a muscle
Epimysium
The sheath of connective tissue enveloping bundles of muscle fibers
Perimysium
Moveable end of a muscle
Insertion
Immovable end of a muscle
Origin
Causes a persons muscle to not contract or relax
Tetanus
An involuntary and forcibly contracted muscle that does not relax
Muscle cramp
Something that occurs during strenuous exercise/ lactic acid accumulates
Oxygen debt
Cytoplasm of a strained muscle fiber
Sacroplasm
How does rigor Morris affect muscles
It stiffens muscles after death for up to 72 hours
What’s the difference between atrophy and hypertrophy?
Atrophy- muscle becomes weak due to disease
Hypertrophy- muscle enlarges due to disease or working out
Where does muscle energy come from
ATP at cellular level (mitochondria)
