Answer:
Plant hormones are among the most important biochemicals affecting plant growth and yield production under different conditions, including stress. Plant hormones include auxin, abscisic acid, ethylene, gibberellins, cytokinins, salicylic acid, strigolactones, brassinosteroids, and nitrous (nitric) oxide. Plant functioning under stress is affected by plant hormones, which can help the plant to tolerate the environmental stresses. A wide range of actions have been illustrated for plant hormones. If it is possible to regulate the activities of plant hormones under stress, the production of tolerant plant species will be more likely. Soybean [Glycine max (Merr.) L.] growth and activities, including the process of nodulation and biological N fixation with the N fixing bacteria Bradyrhizobium japonicum, are also regulated by plant hormones. The important point about plant hormones is their interactions and cross talk, affecting their activity and efficiency in plants under different conditions, including environmental stresses. Some of the most important findings related to the behavior of the soybean and its symbiotic B. japonicum under environmental stresses as affected by plant hormones are presented.
Explanation:
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Explanation:
Stay safe during hot-weather exercise by drinking enough fluids, wearing proper clothing and timing your workout to avoid extreme heat
cardiovascular fitness activities
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Answer:
The difference between the effects of a spinal injury at C3 and one at T3 is due to the fact that the segment of the spinal cord affected, and the functions it controls, are different.
Explanation:
From the spinal cord originate the spinal nerves, which are responsible for controlling both sensory and motor nerve functions.
Each segment of the spinal cord controls a group of specific motor and sensory nerves, known as myotomes and dermatomes.
Vertebral injuries can cause spinal cord inflammation or permanent spinal cord damage. The involvement of a segment of the spinal cord can be evidenced by
- <u><em>Sensory level</em></u><em>: which is the lowest level of sensory function that remains intact. </em>
- <u><em>Motor level</em></u><em>: the lowest level in which motor activity remains functional. </em>
<u><em>The difference between a C3 and T3 lesion is that the cervical lesion affects the dermatome and myotome that control this segment, in addition to all those below it. On the other hand, a T3 lesion can affect this dermatome and myotome, in addition to the lower ones, but the functions above the lesion will not be affected</em></u>.
- A vertebral injury in C3 —third thoracic vertebra— is very high —sensory and motor level with response maintained on the neck— and produces a failure of almost all the peripheral nerves, with paralysis from the neck down. This includes breathing and control of the diagphragm (breathing) and the four limbs.
- Injuries in T3 —third thoracic vertebra— the motor and sensory level is lower, allowing movement of arms and breathing, but with paralysis of part of the trunk, lower extremities and control of the bowel and urinary bladder.