Answer:
A. when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons.
Explanation:
This is the mechanism of propagation and transmission of sound waves as action potential to from the ear to auditory centres in the brain. This mechanism takes place in the inner ear( organ of corti, supported by basilar membrane.There are group of receptors in the Endolymph, whicha are hair cells supported by the tectorial membrane,.The organ of Corti acts as transducers in the inner ear and converts the circular fluid motion to electrical signals as action potential, when the hair cells bends against the tectorial membrane as a results of vibration of the endolymph The causes depolarization, and therefore action potential.
The potential is transmitted to the auditory centres in the brain for sound perceptions.
Rickets is caused as a result of vitamin D deficiency. The role of vitamin D in the body is its significance in the absorption of phosphorus and calcium from the gut. Consequently, phosphorus and calcium in the blood is absorbed in the extracellular matrix of bone hence giving them strength. Therefore, deficiency of vitamin D results to soft bones that are a symptom of rickets.
The first one is the right one that will give you points
How does the indents appearance affect its survival
Answer: Amazon are the largest rainforests in the world.
Explanation:
The Amazon Rainforests are located in the northern South America. The following are the ways in which the Amazon rainforests are important to the world.
1. The Amazon Rainforests can regulate the major cycles like water cycle, carbon cycle and oxygen cycle necessary for maintaining the aesthetic qualities of the environment. These are also necessary for maintaining the weather patterns. These phenomena makes the earth habitable.
2. These forests provides accommodation to 30 million native people. These forests are also the source of 10% if the total world's biodiversity.
