Answer:
The vertebrae that are characterized by having enhanced weight-bearing capability are the <u>lumbar vertebrae.</u>
Explanation:
The main function of the lumbar column is supporting the weight of the body. The five lumbar vertebrae are numbered from L1 to L5 vertebrae are the most voluminous. They are wider and stronger, because they absorb the stress of heavy lifting.
The whole weight of the upper part of the body rests on the lumbar vertebrae, causing many back problems in this region despite the size and strength of the vertebrae.
<span>A human body is composed of muscles. Without it, the human body cannot function and will die. </span>
There are three types of muscle tissues: Skeletal muscle, Cardiac muscle, and Smooth muscle.
The skeletal muscle aids in the movement of the human skeleton. The 600 skeletal muscles make up 40 % of our body weight and are reliant on the signals released by our nervous system to start moving.
<span>Cardiac muscles are those muscles which encloses our hearts. They are involuntary muscles which pumps blood throughout our bodies by creating steady and rythmic pulsing. They also make our heart contract by producing electrical impulses. </span>
<span>Smooth muscles are found in the walls of blood vessels, respiratory passageways, and hollow organs. Its contracting movement is wavelike and it helps in the transfer of food through our stomachs or urine through our bladder. </span>
<span>These muscles responds to nerve impulses and other stimuli.</span>
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