P1 5 & 6. Muscle types and physical activity Flashcards
what are the three types of muscles
cardiac
involuntary
voluntary
what are voluntary muscles
muscles involved in skeletal movements under conscious control
what are involuntary muscles
muscles involved in digestion and vascular shunting
what are cardiac muscles
muscles involved in the heart pumping blood around the body
where are the cardiac muscles
found exclusively in the heart
not under conscious control. they contract and relax continuously throughout our lives
facts about cardiac muscles
provides pumping action circulating the blood
responds to an internal electric impulse and contracts using heartbeats
deliver oxygen and remove waste products
major role when doing sports
where are involuntary muscles
located in the blood vessels and throughout the digestive system. known as smooth muscle
what’s heart rate
whats stroke volume
no of times your heart beats per minute
amount blood pumped through and out your heart in a beat
measured in mm per heart beat
what’s is vascular shunting
the redistribution of blood flow
increases blood flow to active areas during exercise by diverting blood away from inactive areas
what is vasodilation
widening of the internal diameter of linen to increase volume of blood travelling though
what is vasoconstriction
narrowing of internal diameter of lumen of blood vessels to restrict amount of blood travelling through
where are voluntary muscles
attach to your bones via tendons
biceps and triceps
under conscious control meaning you can decide when and how powerfully you contract them
what are the 14 voluntary muscles
deltoid
tricep
hamstring
trapezius
latissimus dorsi
gluteals
gaestrocneimius
bicep
external oblique
hip flexor
tibialis anterior
pectorialis major
abdominals
quadracepts
tibialis contracts causin
dorsi flexion of the ankle
tricep contracts causing
extension of the shoulde
