In the muscle, what is the cell membrane, the cytoplasm, the smooth ER, and the mitochondria called?
Sarcolemma, sarcoplasm, sarcoplasmic reticulum, and sarcosomes.
Why does skeletal muscle have multiple nuclei?
Because the muscle is formed by the fusion of multiple myoblasts.
Name the three types of skeletal muscle fibers.
Red, slow-twitch (type 1)
Intermediate, fast-twitch (type 2A)
White, fast-twitch (Type 2B)
Intermediate, fast-twitch (type 2A)
White, fast-twitch (Type 2B)
What is the largest protein in the body and what does it do in skeletal muscles?
Titin. It keeps the muscle from overstretching.
What is the I-band?
A band that expands the ends of 2 sarcomeres and lacks thick myofilaments.
What happens to the H-band and A-band during a partial contraction?
H-band decreases.
A-Band stays the same.
A-Band stays the same.
What happens to the H-zone, I-band, and A-band during full contraction?
H-zone disappears.
I-band narrows.
A-band stays the same.
I-band narrows.
A-band stays the same.
What are the connective tissues of skeletal muscle?
Endomysium, perimysium, and epimysium
What composes a motor unit?
One alpha motor neuron and all of the muscle fibers it innervates.
Kartensatzinfo:
Autor: toncrayb
Oberthema: Medicine
Thema: Microanatomy
Veröffentlicht: 03.11.2009
Schlagwörter Karten:
Alle Karten (23)
keine Schlagwörter
