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Nervous, Sensory, an
Biology Freshmen
| Question | Answer |
|---|---|
| The part of a neuron that carries impulses to the cell body is the, | dendrites |
| The flow of electrical charges along the cell membrane of a neuron is due to changes on either side of the membrane of which ions? | Both sodium and potassium |
| The peripheral nervous system includes all of the following except which choice? | The peripheral doesn’t include the brain, spinal cord |
| Once any sensory receptor is activated, it transforms energy from the environment into, | action potentials |
| The brain and spinal cord are part which system? | central nervous system |
| If you accidentally touch a hot stove, you pull your finger away without thinking because of which action? | reflex |
| The maintenance of a relatively constant internal environment is called, | homeostasis |
| In humans most reflexes are controlled by which part of the nervous system? | Spinal cord |
| All ductless glands are, | ductless organs that secrete hormones either into the bloodstream or the fluid around the cells (extracellular fluid). |
| The level of hormones in the body is regulated by | feedback mechanisms, endocrine system, endocrine glands |
| Compared with its response to nerve cells, the body's response to hormones is typically described how? | Slower, Biological response instead of neurological response |
| Muscles on the left side of the body are controlled by which side of the cerebrum? | right side |
| The long fiber that carries impulses away from the nerve cell body is which part? | axon |
| Impulses are carried toward the brain and spinal cord by which nerves? | , afferent |
| Neurons have an electric charge difference across their plasma membranes. This resting potential is created by ion pumps and channels. Voltage differences are due to ions result in a membrane potential. Unstimulated axons have a resting potential while s | channels. Voltage differences are due to ions result in a membrane potential. Unstimulated axons have a resting potential while stimulated axons produce what kind of potential? action potential |
| What is the function of the NA+/K+ pump and ion channels? | The pump concentrates K + ions on the insides and Na + ions on the outsides of neurons. Ion channels allow K + ions to leak out, leaving behind unbalanced |
| The receptors for hearing and balance are located in the For questions 19-21 three of the choices share a common characteristic. Choose the term that does not share this characteristic and fill in that choice on your scantron sheet. | inner ear |
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