To determine: The minimum number of neurons required in the simplest reflex.
Introduction: A reflex action is a fast movement of a body part in response to the stimulus. There are various types of reflexes. Simplex reflex is the most basic type of reflex.
To determine: The minimum number of synapse required in the simplest reflex.
Introduction: Synapse is defined as the gap between the nerve endings of the two neurons. The signals are transferred from one neuron to the other through these synapses which release neurotransmitters.
To determine: An example of the simplest reflex.
Introduction: The reflex is an instant and involuntary movement of a body part that occurs in response to the stimulus. There are various types of reflexes. Simplex reflex is the most basic type of reflex.
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EBK HUMAN PHYSIOLOGY
- Place the following concepts in the correct order to explain how a reflex works: Target organs , Afferent neuron , Sensory receptor , Interneuron , Motor neuronarrow_forwardWhat is the physiological function of chemical and electrical synapses between reflexes (eg. a Knee Reflex and jerk reflex).arrow_forwardName one reflex of the body and briefly discuss it and give one example.arrow_forward
- In a withdrawal reflex with reciprocal innervation: inhibitory interneurons decussate from the alpha motor neuron extensor muscles contract to oppose the motion of the flexor excitatory interneurons synapse with the alpha motor neuron extensor muscles relax and do not oppose the motion of the flexorarrow_forwardDefine Hering-Breuer reflexarrow_forwardMuscle fatigue has been suggested as one factor that can increase the chances of non-contact sports injuries, such as anterior cruciate ligament (ACL) tears. Notably, some researchers have noted a delay in the reflex response after muscle fatigue. With your understanding of the stretch reflex, which of the following is the most logical contributing factor to the injury? a. the distraction of the game causes inhibitory impulses to be sent down from the somatosensory cortex, so muscles are not operating at full capacity b. the proprioceptors adapt and become less sensitive c. there is an increase in time to muscle contraction after triggering a reflexarrow_forward
- Use logic to determine whether each of the following reflexes is a somatic reflex or an autonomic (visceral) reflex. Hint: think about what the effector is — is it a skeletal muscle, or is it a smooth / cardiac muscle or gland? -Patellar (knee-jerk) reflex -Pupillary light reflex (autonomic/somatic) -Effectors are skeletal muscles (autonomic/somatic) -Effectors are smooth muscles or glands (autonomic/somatic) -Regulation of blood pressure (autonomic/somatic) -Salivary reflex (autonomic/somatic)arrow_forwardReciprocal inhibition between reflexes depends upon all the following,except :-a- presence of inhibitory interneurons in the reflex pathwaysb- presence of excitatory interneurons in the reflex pathwaysc- presence of anion channels in membranes of the involved neuronsd- release of inhibitory transmitters which block cation channels in the reflex pathwaysarrow_forwardSometimes you have lighting fast reflexes to protect yourself from a further dangerous situation – burning your hand, stepping on a nail or broken glass, etc. Okay, the situation or stimulus might not always we dangerous such as when the doctor checks your patellar reflex with their hand or rubber mallet. Explain the neurons involved in a reflex arc and how they trigger a reflex action in response to a stimulus.arrow_forward
- Which of the following is the correct order of components in a reflex? Place in correct order stimulus, effector, efferent pathway, integrating center, afferent pathway, receptor?arrow_forwardStretch reflex is characterized by the following except :-a- disynaptic reflexb- high localizationc- shows reciprocal innervations.d- it is of graded responsearrow_forwardrank the components of a reflex arc in the correct orderarrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax