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horsena [70]
1 year ago
11

Explain the pathway of reflex arc and all the components involved from the time the patellar tendon.

Biology
1 answer:
klasskru [66]1 year ago
7 0

A reflex action is an instantaneous automatic reaction to a stimulus, typically a pain stimulus. The peripheral nervous system's elements carry out the action. In order for a person to be aware of what has happened, information is sent from the lower portions of the brain to the higher areas once the event is completed.

The reflex arc is the path that a nerve impulse takes when performing a reflex action. The reflex arc's elements are receptors, sensory neuron, inter neuron, motor neuron, effector organ.

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An anthropologist discovers the fossilized heart of an extinct animal. The evidence indicates that the organism's heart was larg
dangina [55]

Answer:

Option A, most closely related to mammals

Explanation:

Insects like arthropods and molluscs have an open circulatory system and thus do have a distinguishable heart. Fish has two chambered heart. Reptiles have three chambered heart. Amphibians too have a three chambered heart.  

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Hence, option A is correct

 

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The only explanation in this situation is that the parent rocks of the marble and slate were different. This indicates that the region once held both shale and limestone before metamorphism.

In reference to rocks, it denotes those that have undergone metamorphism—rocks that may have started as sedimentary, igneous, or another type of metamorphic rock but has since undergone "recrystallization" and taken on an entirely new form—under new temperature and pressure conditions.

For instance, when limestone is heated and compressed, it changes into marble, a more coarsely crystalline and occasionally banded rock.

When shale, a clay-rich, soft rock, is compressed, slate, a tougher rock, is created.

The alterations are frequently even more remarkable, resulting in the formation of new minerals, including garnet, mica, and tourmaline (as seen in schist).

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