postural reflexes

Question 1

Front

Answer 1

Back

Question 2

Stretch Reflex

Answer 2

Stimulus: Muscle stretch. Response: Muscle contraction. Receptor: Muscle spindles. Integrated: Spinal cord/medulla.

Question 3

Positive Supporting (Magnet) Reaction

Answer 3

Stimulus: Contact with sole/palm. Response: Limb extension for support. Receptor: Distal flexor proprioceptors. Integrated: Spinal cord.

Question 4

Negative Supporting Reaction

Answer 4

Stimulus: Extensor stretch. Response: Releases positive support. Receptor: Extensor proprioceptors. Integrated: Spinal cord.

Question 5

Tonic Labyrinthine Reflex

Answer 5

Stimulus: Gravity. Response: Limb extensor contraction. Receptor: Otoliths. Integrated: Medulla.

Question 6

Tonic Neck Reflex

Answer 6

Stimulus: Head turned. Response: Limb extension on face side, flexion on skull side. Receptor: Neck proprioceptors. Integrated: Medulla.

Question 7

Labyrinthine Righting Reflex

Answer 7

Stimulus: Gravity. Response: Head leveling. Receptor: Otoliths. Integrated: Midbrain.

Question 8

Neck Righting Reflex

Answer 8

Stimulus: Neck stretch. Response: Thorax/shoulders righting. Receptor: Neck spindles. Integrated: Midbrain.

Question 9

Body-on-Head Righting

Answer 9

Stimulus: Body-side pressure. Response: Head righting. Receptor: Exteroceptors. Integrated: Midbrain.

Question 10

Body-on-Body Righting

Answer 10

Stimulus: Body-side pressure. Response: Body righting (even if head held). Receptor: Exteroceptors. Integrated: Midbrain.

Question 11

Optical Righting Reflex

Answer 11

Stimulus: Visual cues. Response: Head righting. Receptor: Eyes. Integrated: Cerebral cortex.

Question 12

Placing Reactions

Answer 12

Stimulus: Mixed sensory cues. Response: Foot placement for support. Receptor: Various. Integrated: Cortex.

Question 13

Hopping Reactions

Answer 13

Stimulus: Lateral displacement. Response: Limb adjustment hops. Receptor: Muscle spindles. Integrated: Cortex.