This is a barrier island. These typically are formed as a way of protecting the mainland from storms and erosional forces. In addition, barrier islands typically form parallel to the mainland and in chains. These islands can allow wetlands to form once enough sand has built up near the shoreline.

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Increases and decreases of the heart rate result from changes in the activity of the _______. A. medulla oblongata B. thalamus C

pantera1 [17]

Option A. Increases and decreases of the heart rate result from changes in the activity of the medulla oblongata

What is medulla oblongata ?

Medulla oblongata, also called medulla, the lowest part of the brain and the lowest portion of the brainstem.
The medulla oblongata is connected by the pons to the midbrain and is continuous posteriorly with the spinal cord, with which it merges at the opening (foramen magnum) at the base of the skull.
The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration
The medulla is divided into two main parts: the ventral medulla (the frontal portion) and the dorsal medulla (the rear portion; also known as the tegmentum).
The ventral medulla contains a pair of triangular structures called pyramids, within which lie the pyramidal tracts.
The pyramidal tracts are made up of the corticospinal tract (running from the cerebral cortex to the spinal cord) and the corticobulbar tract (running from the motor cortex of the frontal lobe to the cranial nerves in the brainstem)

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