The stomach and the cells that comprise it have a three-part protection system to protect from the acid contained in the stomach, comprised mostly of compact cell unions.
The stomach is one of the main digestive tract organs. Its job is to break down the food we ingest and pass it along to the rest of the digestive tract. To perform this action, the stomach secrets hydrochloric acid. However, the stomach itself is not damaged by this acid due to a three-part protective system comprised of:
- Tight epithelial cell lining
- Mucose Barrier
- Bicarbonate secretion
The cells present in the epithelial lining of the stomach join one another via compact cell unions to form a closed barrier which is then covered by a thick Mucose barrier. This along with the secretion of bicarbonate which works to break up the acids present in the stomach and ingested, form a sealed barrier that protects the stomach from harm.
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Answer:
D
Explanation:
Biomes are large divisions on earth based on climatic patterns, soil types, and the animals and plants that inhabit an area. Examples are aquatic and desert biomes
Ecosystems are interactions between communities (biotic elements) and abiotic elements in their environment.
A population is made up of individuals of the same species
Answer:
500 J
Explanation:
Emechanical=U+K,i.e., the mechanical energy Emechanical is the sum of the potential energy U and kinetic energy K.
So, the object has a mechanical energy of 200+300=500 J.
Answer:
components in blood that affect viscosity is formed elements, plasma proteins, WBCs, RBCs and platelets. ... When there is an increase in viscosity, it decreases the blood flow rate, 3. Describe the graph of flow versus viscosity.