In the patellar tendon reflex arc, the patellar ligament is stretched, which stretches the quadriceps femoris muscle of the thigh. This reflex will cause the quadriceps femoris to and the hamstrings to .a. relax; contractb. relax; relaxc. contract; relaxd. contract; contract

Contract; relax

Explanation:

In the patellar tendon reflex arc, the quadriceps femoris contracts when the quadriceps femoris of the the thigh is stretched through the stretching of the patellar ligament. This also causes the hamstring to relax

The correct answer is c. contract; relax.

In the patellar tendon reflex arc, the patellar ligament is stretched, which stretches the quadriceps femoris muscle of the thigh. This reflex will cause the quadriceps femoris to contract and the hamstrings to relax.

Explanation:

The patellar reflex is the involuntary contraction of the quadriceps femoris muscles by flexion of the patellar tendon. The patellar tendon is located in the knee joint and connects the patella and the quadriceps tendon with the tibia. Tendons are structures of fibrous junction tissue that originate in the muscle and are inserted into the bone, they are the means of attachment between them. For this reflex of myothetic or stretching type to occur, it is essential to have the leg flexed and relaxed, that is, the hamstring is relaxed, which allows the extension of the leg (reciprocal inhibition).

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explanation:

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unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.