Organ is the term that can be used to describe the organizational level of the brain in the human body.
When we speak of the levels of organization, we refer to the possible divisions or stratifications in which it is possible to study the human body.
In this area, an organ is an associated set of tissues that share the same structure and function.
The scale of biological complexity places organs above tissues and below systems.
The human brain is a main and complex organ that is part of the nervous system, it controls the vital functions of the human body.
It is the organ in charge of controlling and coordinating all the movements we make and processing sensory information.
As an organ system at organizational level it works together with the spinal cord forming the central nervous system.
Therefore, we can conclude that organ is the term that can be used to describe the organizational level of the brain in the human body.
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Answer:
1. Cervical
2. Lumbar
Explanation:
Spinal enlargements are the conspicuous regions in the spinal cord from where spinal nerves to and from limbs exit and enter respectively. Cervical enlargement is also called the superior enlargement. It starts from C4, the fourth cervical vertebra and extends to T1, the first thoracic vertebra. Cervical enlargement is the site from there the nerve that supplies to and come from the upper limbs arise.
Another enlargement is the lumbar enlargement. It is also called inferior enlargement or lumbosacral enlargement and extends from the ninth to the twelfth thoracic vertebra. It is the site from where the nerves to and from the lower limbs arise.
Radiometric dating is a kind of technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.
Answer:
See the answer below
Explanation:
In the first instance, the 100X objective does not have any business touching the slide on the stage so that there would not be any reason to raise it a little in order to go back to a lower objective. At higher objectives, only the fine adjustment should be used to bring the object into focus so as to avoid the objective lens from touching the slide which can damage the objective and or break the slide on the stage.
<em>For the X100 objective to be raised in order to avoid a damage to it, it means John allowed the objective to come too close to the slide in the first place. This should not have been so.</em>
