The ability to sustain aerobic activity for a prolonged period of time is known as cardiorespiratory fitness.
Cardiorespiratory fitness or endurance refers to the ability of the circulatory as well as respiratory systems of the body to provide fuel or power during sustained aerobic activity.
In order to enhance one's cardiorespiratory fitness, physical activities which maintain heart rate elevations at a safe level for a sustained length of time, like walking, running, cycling, etc. need to be attempted.
The cardiorespiratory fitness is linked with the functioning of heart, lungs as well as blood vessels. However, one should slowly increase the pace when performing such activities.
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Answer:
Explanation:
The molecular and cellular mechanisms and processes that explain muscle contraction in striated muscle occur in the myofibril sarcomere. Their understanding depends on the organization's understanding of the structure of the sarcomere. In an imaginary experiment we first assemble an ideal sarcomere.
Remember that the myofibril is a set of cylindrical compartments that are located next to each other, constituting an elongated cylinder. Each of these cylinders is a sarcomere and borders its neighbor on a line or band called, line or band z.
On each side of the z line, thin cylindrical filaments that are actin filaments are inserted. Each actin filament is formed by a double strand of actin molecules that are rolled over each other. In this organization, actin is called actin F.
Answer:
The phylum Hemichordata is the one that could form an evolutionary connection between the chordates and non-chordates.
Explanation:
To the phylum Hemichordata belongs a genus that scientists believe could explain how the chordates could evolve from the non-chordates. This genus is Balanoglossus, of the class Enteropneusta.
Balanoglossus is similar to a worm, whose habitat is the seabed, and like other hemicordates it has a stomach, a structure that forms part of its digestive system and fulfills the functions of a spine.
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Answer:
its easy just read it
Explanation:
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