muscle systm Flashcards
what is muscle
the only tissue capable of shortening and contracting
what is the skeletal muscle function
attaches to bone and are largely responsible for voluntary.
what is the structure of the skeletal muscle
striated muscle: made of striation
what is the structure of smooth muscle?
small,spindle-shaped,none-striated and ivoluntary(not under conscious control) and have a single nucleus
what is the function of the smooth muscle
cells are arranged in layers, the alternate contracting and relaxing of these layers changes the size and the shape of the organ and aid in the moving the contents of the organ
where is the cardiac muscle located?
soley in the walls of the heart
what is the structure of cardiac muscle
branched and cross striated cells that join together at structures called intercalated disc
what is the function of cardiac muscle
the arrangement of cells enables spontaneous contractions of neighboring cells to provide heartbeat
what is extensibility
the ability to be stretched
what is elasticity
the ability to return to normal length after a stretch
what is irritability
the ability to respond to stimulus
what is contractility
the ability to contract and shorten
what is concentric
shortening of muscle
what is eccentric
lengthening of muscle
what is isometric
no change in muscle strength
how does muscle generate heat
The oxidation of metabolic fuels such as carbohydrates and fatty acids in the mitochondria of the muscle fibers produces adenosine triphosphate.
what is muscle strength
determined by how much weight a muscle can lift
what is muscle growth
after you workout, your body repairs or replaces damaged muscle fiber through a cellular process where muscle fibers are raised together to form new muscle protein strands of myofibrils
what is muscle endurance
the ability to continue contracting a muscle, or group of muscles, against resistance, such as weight or body weight over a period of time.
what is muscle fatigue?
when the body is providing much oxygen to the cells as required your cells have no problem keeping up with aerobic respiration.
How does muscle fatigue occurs
When the ATP supply fails to meet the consumption of ATP during exercise
where is frontalis and what is it function
location: forehead
function: raise eyebrows
where is Orbicularis Oculi and what is it function
Location: around eyes
Function: Close eyes
where is Nasalis and what is it function
Location: Nose
Function: modify size of nostrils
where is Orbicularis Oris and where is it function:
Location: Encircles Mouth
Functions: closes lips, kissing motion
where is Zygomaticus and what is it function
Location: Connects cheekbones to corner of mouth
Function: smiling
where is Platysma and what is it function
Location: Front and side of mouth
Function: pulls corners of mouth down, opens mouth wide
where is Masseter and what is it function
Location: Connects cheekbones to corners of mouth
Function: Closes jaw
where is Temporalis and what is it function
Location: muscle over the temporal bone
Function: assist masseter with closing jaw
where is Sternocleidomastoid
and what is it function
Location: Side of neck
Function: lift and rotate head
where is Pectoralis Major and what is it function
Location: Upper chest
Function: flex arm
where is Rectus Abdominis and what is it function
Location: center of abdominal
Function: flex and rotation of trunk
where is Internal Oblique
and what it is function
Location: Right and left side of abdomen
Function: flex and rotation of trunk
where is Trapezius
and what is it function
Loction: Upper back and neck
Function: extension of head
where is Erector Spinae
and what is it function
Length of verbal column
Function: rotation and flexion of vertebral column
where is Diaphragm
and what is it function
Location: separated thoracic and abdominal cavity
Function: enlarges thoracic cavity for inhalation
where is Internal intercostal
and what is it function
Location: connects ribs
Function: decreases thoracic activity during forced breathing
where is External intercostal
and what is it function
Location: Connects the ribs
Function: help enlarge thoracic cavity for inhalation
