Answer:A. The release of calcium ions causes myosin and actin to attach to each other.
The contraction of skeletal muscles takes place by induction of a nerve impulse, which produces a movement and the interaction of the filaments containing proteins named as actin and myosin. This interaction of filaments is regulated by proteins called tropomyosin and troponin present on the actin filaments. The motor nerve causes the depolarization of the muscle membrane sarcolemma. This triggers the sarcoplasmic reticulum to release calcium ions. This calcium binds to troponin and thus allows the tropomyosine strand on the actin filament to displace so that the part of the actin where myosine head needs to be attached remain uncovered. Binding of the actin myosine filament results in contraction.
Hence, the release of calcium ions causes myosin and actin to attach to each other causes muscle contraction.
Second option/ the gametes produced by meiosis allow for closing organisms
Bilateral injection procedure for lymphangiography of axillary node enlargement, left side CPT code: 38790-50 and ICD-10-CM code is ICD-10-R59.9.
The ICD-10-CM code can be found on the website by typing the medical procedure details. The ICD-9-CM-785.6 is the diagnosis code for enlargement of for lymph node. When it is converted to ICD-10-CM the code is ICD-10-R59.9
Answer:
Both prophase and telophase have a complete set of chromosomes and organelles.
