muscle tissue, one of the four principle types of tissue, consists chiefly of muscle cells that are highly specialised for

which of the following is not a type of muscle tissue

skeletal muscle tissue forms skeletal muscles, organs that also contain each of the following except

each cell in skeletal muscle tissue is a

skeletal muscles perform each of the following functions excepr

during development, groups of ? fuse together to form individual skeletal muscle fibres

what is another name for the cell membrane of a muscle fibre

elextrical implieses (action potential) travel down ? into the muscle cells to efficiently trigger muscle fiver contraction

what is the name for the cylindrical structures which can actively shorten and this are responsible for skeletal muscle fibre contraction

myofibrils consist of bundles of ? which are protein filaments composed primarily of thin filaments and thick filaments

the ? is an intracellular membrane complex, containing Ca2+ ions

? ions are released into the sarcoplasm on receiving electrical signals

myofilaments are organised into repeating functional units called ?

a sarcomere contains each of the following except

visually, when viewed microscopically, the sarcomeres have a banding pattern of A bands with a ? at the centre

in the ? thin filaments are situated between the thick filaments and they can slide across each other during contraction

strands of the protein ? function to keep the thick and thin filaments in proper alignment, helps resist extreme stretching, and returns stretched muscles to resting length

a strand of the protein ? lies alongside thin filaments, which helps align thin filaments of the sarcomere

under resting conditions, interaction between thick and thin filaments and this muscle fibre contraction is prevented by the ? complex

muscle fibre contraction involves the interaction of ? of the thick filaments with binding sites on the thin filaments

which strands are part of the thin filament and function to cover active sites thus preventing actin-myosin interactions

how many subunits does troponin molecule have

when a skeletal muscle contracts

during contraction, thin filaments slide towards the centre of each sarcomere alongside the thick filaments and sliding occurs in every sarcomere along a myofibril, thus the

the model representing the physical changes that occur, which describes what happens to the sarcomere during contraction is called the

normal skeletal muscle contraction only occurs when skeletal muscle fibres are activated by motor neurons resulting in so called

the first step in muscle contraction is the release of ? into the sarcoplasm

after release from the sarcoplasmic reticulum, ions then trigger interactions between ? resulting in muscle fibre contraction

interactions during contraction produce ? and consume energy

when sarcomere shorten in a contraction, they ? the muscle fibre

? produced by an i social muscle fibre, or indeed an entire skeletal muscle, can vary widely and can change moment to moment

a muscle fibre is either contracting or relaxed, this is the ? and whje a fibre contracts it does so fully

a single stimulus contraction relaxation sequence in a muscle fibre is called a twitch, which can be measured as a

which of the following can not be used to describe part of a single twitch

if a skeletal muscle is stimulated a second time immediately after the relaxation phase has ended the force will rise, if this happens repeatedly force rises like steps in a staircase, a phenomenon called

if a second stimulus arrives before the relaxation phase has ended a second more powerful contraction occurs which is referred to as

? is induced in muscle when the stimulation rate is increased so much that the relaxation phase is completely eliminated

which of these is not one of theee major types of skeletal muscle fibre

what is generally considered in terms of power and endurance

what functions of skeletal muscle is least dependent on its connections to other tissues

which muscle type does not contract spontaneously

what is the role of Ca2+ in the muscle action potential?

what is the role of T tubules in skeletal muscle function

a motor unit containing few muscle fibres produces

curare completely blocks cholinergic transmission at the neuromuscular junction. it will therefore cause

when a whole motor nerve is stimulated electrically, increasing strength of stimulus causes the muscle to contract more strongly. why is the all or non law apparently not obeyed

which organs are capable of generating heat

what component of sarcomere does the I band represent

which of the following correctly describes the sarcomere during contraction

if a muscle is stretched until the zone of overlap disappears

at the molecular level, the energy source for contraction is

the energy dependent rotation of the myosin head during muscle contraction is responsible for

what is the first step in the contraction of a skeletal muscle fibre

what is the role of the sarcoplasmic reticulum in skeletal muscle

during excitation contraction coupling, troponin bonds Ca2+. how does this enable contraction to occur

while Ca2+ is present in the sarcoplasmix reticulum

during peak activity muscles cannot generate enough ATP from oxygen dependent metabolism. what happens?

accumulation of lactic acid in contracting skeletal muscle is also called the ‘oxygen debt’. what does this mean