13. The Peripheral Nervous System

Why is reciprocal inhibition an important part of the stretch reflex?

Which of these mechanisms causes golgi tendon organs to start firing action potentials?

Which of the following is the correct order of events of a reflex arc?

a. Stimulus detection and delivery → motor response → integration in the CNS

b. Motor response → stimulus detection and delivery → integration in the CNS

c. Stimulus detection and delivery → integration in the CNS → delivery of motor response

d. Integration in the CNS → motor response → stimulus detection and delivery

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

a. The simple stretch reflex is a monosynaptic reflex with only a single synapse in the spinal cord between the sensory and motor neurons.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

b. The Golgi tendon organs detect stretch in a simple stretch reflex.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

c. A flexion reflex is a monosynaptic reflex with only one synapse in the spinal cord.

What effect does the stimulation of a sensory neuron that innervates an intrafusal muscle fiber have on muscle tone?

What are the components of a visceral reflex arc?

A reflex that causes reciprocal activation of the antagonist muscle is the

(a) crossed-extensor

(b) flexor

(c) tendon

(d) muscle stretch.

Differentiate between ipsilateral and contralateral reflexes.