The marginal cost curve is U-shaped. For the first 4 Stuffed Amigos, marginal cost declines from $5 to a low of $1.50. However, for the production beyond 6 Stuffed Amigos, marginal cost increases.
Stretch Reflex. The stretch reflex is one of the simplest reflexes which contract a muscle that is being stretched. The stretch reflex is mediated through a monosynaptic arc and it contributes to the maintenance of steady standing posture and to coordinate muscle movement.
Because the Ia afferent fibers synapse directly onto the proximal dendrites and soma of the motor neuron in the spinal cord, the tendon reflex is monosynaptic and may be referred to as a phasic stretch reflex, muscle stretch reflex, or deep tendon reflex.