Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

MCAT Biology > Musculoskeletal > Flashcards

Musculoskeletal Flashcards

You may prefer our related Brainscape-certified flashcards:
MCAT flashcards AP® Biology flashcards Biology 101 flashcards
1
Q

Sarcomere

A

The contractile unit of the fibers in skeletal muscle and contains thin actin and thick myosin filaments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Initiation of Contraction

A

depolarization of a neuron leads to an action potential

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Sarcomere Shortening

A

SR releases calcium ions
Ca2+ binds to troponin on the actin filament
Tropomyosin shifts, exposing myosin-binding sites
Myosin binds, ATPase activity allows myosin to pull thin filaments towards the centre of the H zone and then ATP causes dissociation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Relaxation

A

Ca2+ is pumped back into the SR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Osteoblast

A

builds bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Osteaclast

A

breaks down bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Reformation

A

inorganic ions are reabsorbed from the blood for use in bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Degradation (resorption)

A

inorganic ions are released into the blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly

MCAT Biology (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions