How does the stretch reflex cause the quadriceps femoris muscle group to contract?

Stretch reflex causes muscle fiber to stretch. This situation sends sensory signals to the spinal cord and the response is a muscle contraction, in this case, the femoral quadriceps contraction.

Explanation:

The stretch reflex occurs at the muscle level and for it to occur it is important to emphasize a structure wrapped deep in the muscle fibers of the central region of the muscle. This structure is called muscle spindle or neuromuscular spindle and is very sensitive to stretching (stretching) of muscle fibers.

When muscle fiber stretching occurs, the spindle sends sensory signals to the spinal cord and the response is a contraction of the same muscle to prevent its fibers from rupturing, generating a protective response. This is how the stretch reflex causes the femoral quadriceps muscle group to contract.

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.

feral cats are estimated to eat tens of millions of native animals each night in australia