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.
As you stretch the muscle, a message gets sent to your central nervous system (not necessarily your brain) that can cause a reflex contraction of the exact muscle that you are trying to stretch! The most common example of the stretch reflex is a test for the stretch reflex in your quadriceps (thigh muscles). In this test, the tendon below the knee (Patella tendon is hit with a small reflex hammer. (Dont try this with dads regular hammer â it might hurt!). This causes a stretch in the quadriceps (Thigh Muscles) which is sensed by little stretch receptors in the muscle cell. The message of the stretch is carried by the nerve to your spinal cord.