1. A depolarizing graded potential a. jumps from node to node of Ranvier b. make

Question

1. A depolarizing graded potential a. jumps from node to node of Ranvier b. makes the membrane more polarized c. is not considered a graded potential d. makes the membrane less polarized c. is the last part of an action potential _ ion channels detect chemicals, such as for taste or smell. a. Voltage-gated b. Ligand-gated c. Mechanical-gated d. Energy-gated controls muscle length -using a muscle spindle as its sensory receptor a. crossed extensor reflex b. flexor withdrawal reflex c. stretch reflex d. tendon reflex 4. The_is the spinal cord component resulting from nervous input from the upper limbs. a. lumbar enlargement b. filum terminale c. cauda equine d. denticulate ligament e. cervical enlargement 5. conduct action potentials from the spinal cord to the thalamus. a. First-order neurons b. Upper motor neurons c. Second-order neurons d. Lower motor neurons e. Third-order neurons (Ch. 12-13) Page I of 3 Coconino Community College

Explanation / Answer

1. A depolarizing graded potential makes the membrane less polarized.

2. voltage gated ion channels detect chemicals, such as for taste or smell.

3. The stretch reflex controls muscle length using a muscle spindle as its sensory receptor.

4. The cervical enlargement is the spinal cord component resulting from nervous input from the upper limbs.

5.Second order neurons conduct action potentials from the spinal cord to the thalamus.

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