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amir_civil62
Member since:
February 28, 2010
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Iran (Islamic Republic Of)
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Sensations, or nerve impulses, begin with the exciitation of sensory receptors, structures that detect changes in an animal's external and internal environment. Some sensory receptors are stimulated by physical bending or stretching caused by forms of mechanical engergy such as pressure, touch and motion. A common type of sensory receptor that dectects motion is the hair cell. When hairs bend in one direction. they stretch the hair cell's membrane, sending a nerve imipulse to the sensory areas of the brain. Hair cells can respond to the direction of motion as well as to its strength and speed.
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TOEFL iBT (Speaking Practice)
Practice Question 3: Skill A-Q2-Practice 1: Some people like to enjoy their money as they earn it. Others like to save their money to use sometime in the future. Which do you prefer? Include details and examples in your explanation. Use exactly 45 seconds for your response.
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TOEFL iBT (Speaking Practice)
If you could have any job, what would it be and why?
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TOEFL iBT (Speaking Practice)
iBT TOEFL Speaking Topic 1.4: Integrated task (academic reading passage and lecture)
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Education, Learning & Language
iBT TOEFL Speaking Topic 1.3: Integrated task (campus notice and conversation)
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Education, Learning & Language
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