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WorksheetsFunctions Of Skeletal Muscle
Total questions: 49
Worksheet time: 3615secs
What type of muscle tissue is this?
cardiac
skeletal
bone
smooth
What type of muscle tissue is this?
cardiac
bone
skeletal
smooth
What type of muscle tissue is this?
cardiac
smooth
bone
skeletal
Whats is the function of a Skeletal Muscle? (try to list most if not all)
Skeletal Tissues are excitable. What is the definition of "Excitability"?
involves sending an electrical change down the length of the cell membrane
ability to respond to a stimulus by changing electrical membrane potential
exhibited when filaments slide past each other
ability to be stretched.
Skeletal Muscles are Conductive. What is the definition of Conductivity?
exhibited when filaments slide past each other
ability to return to original length following a lengthening or shortening
involves sending an electrical change down the length of the cell membrane
ability to respond to a stimulus by changing electrical membrane potential
Definition of Contractility?
exhibited when filaments slide past each other
ability to return to original length following a lengthening or shortening
involves sending an electrical change down the length of the cell membrane
ability to be stretched.
Definition of Elasticity?
ability to be stretched.
ability to return to original length following a lengthening or shortening
involves sending an electrical change down the
length of the cell membrane
ability to respond to a stimulus by changing electrical membrane potential
Definition of Extensibility?
ability to return to original length following a lengthening or shortening
involves sending an electrical change down the length of the cell membrane
ability to be stretched.
exhibited when filaments slide past each other
The 3 concentric layers of wrapping are...
osteon, osteosytes, osteonclast
smooth, dense, irregular
Epimysium, Perimysium, Endomysium
Attachments of muscle to bone (or to skin or to another muscle) can be
ligaments, femur
bone, smooth
tendon, aponeurosis
What is labeled as A?
(a)
What is labeled as B?
(a)
What is labeled as C?
(a)
What is labeled as D?
(a)
What is the hierarchy of structures in a muscle?
muscle fiber
endomysium
fascia
A thicker connective tissue sheath that wraps muscle fibers together in bundles called:
PERIMYSIUM
Aponeurosis
Palmaris
Fasicles
perimysium and fascia carries large nerves and blood vessels as well as stretch receptors called muscle spindles.
Fibrous sheath that surrounds the entire muscle?
PERIMYSIUM
EPIMYSIUM
ENDOMYSIUM
Blood vessels and nerves delivers___________and___________ removing waste
(a)
What allows skeletal muscles to voluntary control or contract?
ligament
somatic neurons
smooth muscle
What is Sarcoplasm?
cytoplasm
Has typical organelles plus contractile proteins
satellite cells for support and repair of
muscle fibers
What is Sarcolemma?
Has typical organelles plus contractile proteins
plasma membrane
Multiple nuclei
Has T-tubules (transverse tubules) that extend deep into the cell
put them in order
Myofilaments arranged in repeating units
microfilament
sacromeres
fibers
molecules
What % of the body is contracting at 50ms?
8
12
5
3
which of the 4 primary tissues have no blood vessels?
connective tissue
epithelial tissue
muscle tissue
nervous tissue
when fibers contract, fibers ________
stay the same
decrease
increase
when skeletal muscles contract, sacomearse ___________ in length
increase
stay the same
decrease
Which is the thin filament?
z disc
m line
which is the thick filament?
middle
z line
Myofibrils contain thick and thin filaments. thick filaments contain
lots of sacromerase
bundles of myosin protein molecules
muscle fibers
Each myosin molecule has two heads and two intertwined tails.Heads have binding site for actin of thin filaments and ATPase site.
Heads point toward ends of the filament.
Tropomyosin
globular protein attached to tropomyosin
twisted stringlike protein covering actin in a noncontracting muscle
Troponin: globular protein attached to tropomyosin
When Ca2+ binds to troponin it _________ tropomyosin _________actin allowing contraction
(a)
What is A?
(a)
What is B?
(a)
Sarcoplasmic reticulum
Has pumps that import Ca2+ into sarcoplasmic reticulum
Has channels that allow Ca2+ to be released into surrounding sarcoplasm to trigger contraction.
i bands are?
light containing thin ligaments
dark containing thick ligament with overlapping thin ligaments
a bands are?
Light-appearing regions that contain only thin filaments
Dark-appearing region that contains thick filaments and overlapping thin filaments
Myoglobin within cells allows storage of oxygen used for aerobic ATP production
Glycogen is stored for when fuel is needed quickly
Creatinine phosphate can quickly give up its phosphate group to help replenish ATP supply
what is a motor unit?
What is A?
(a)
what is B?
(a)
What is C?
(a)
What is D?
(a)
