Fill in the blanks in each sentence below after re-reading the section on Osmosis and Tonicity. Osmosis is the movement of _________ across a ___________ ____________. Osmosis is a special case of ___________. Water moves from an area of _________ concentration of water to an area of ______ concentration of water. If a cell is in a hypotonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell. If a cell is in a hypertonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell. If the osmolarity of the extracellular fluid is the same as the osmolarity inside the cell, then this is said to be a/n ______________ solution.
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
- Fill in the blanks in each sentence below after re-reading the section on Osmosis and Tonicity.
- Osmosis is the movement of _________ across a ___________ ____________.
- Osmosis is a special case of ___________.
- Water moves from an area of _________ concentration of water to an area of ______ concentration of water.
- If a cell is in a hypotonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell.
- If a cell is in a hypertonic solution, the extracellular fluid has a ________ solute concentration as compared to the inside of the cell. Water will move ________ the cell.
- If the osmolarity of the extracellular fluid is the same as the osmolarity inside the cell, then this is said to be a/n ______________ solution.
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