Reflexes and Sensory Systems

These flashcards cover key concepts related to reflexes, sensory systems, and their underlying neurophysiology.

Stretch Reflex

A reflex that is triggered when muscles are stretched beyond their capacity to protect against injury.

Knee Jerk Reflex

A reflex action that involves the contraction of the quadriceps in response to the tapping of the patellar tendon.

Motor Neuron

A neuron that carries signals from the spinal cord to muscles, causing them to contract.

Acetylcholine

A neurotransmitter released at the neuromuscular junction that stimulates muscle contraction.

Olfaction

The sense of smell, which involves the detection of airborne odorants by olfactory receptors.

Taste Receptors

Cells located on the taste buds that detect tastants dissolved in saliva.

Glomerulus (in the olfactory bulb)

A spherical structure where olfactory neurons synapse and process scent information.

Pheromones

Chemical signals released by one animal to influence the behavior of other animals of the same species.

Motor Plan

A set of muscle commands established in the nervous system before executing a movement.

Proprioception

The awareness of the position and movement of the body, essential for coordinated movement.