Answer:
Walls are thin.
Inner surface is moist.
Tissues are filled with blood vessels.
Exposed to air
Explanation:
Answer:
Plants extract the carbon dioxide from the air and use it in photosynthesis process to feed themselves.
Do prokaryotic cells have membrane bound organelles
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics.
The thoracic region receive sympathetic innervation from the middle and inferior cervical ganglia.
The cervical sympathetic trunk is the portion of the sympathetic trunk located to the left and right of the cervical spine, this trunk extends from the entrance of the thoracic wall to the base of the skull.
- It is made up of 3 ganglia: the superior ganglia made up of the first 3 cervical ganglia; the middle ganglia made up of the 4th cervical ganglion and the inferior ganglia made up of the last 4 ganglia.
- These ganglia are responsible for the sympathetic innervation of the upper extremities, the viscera of the thoracic cavity and that of the organs of the abdominal cavity.
Therefore, we can conclude that the thoracic sympathetic chain is made up of ganglia that innervate the thoracic region.
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