The brain receives sensory information from which two structures contained within muscles and tendons?

The correct answer is that the brain receives sensory information from muscle spindles and Golgi tendon organs. Muscle spindles are specialized sensory receptors located within the belly of muscles that detect changes in muscle length and the rate of that change. They play a crucial role in the reflex actions that help maintain posture and coordination. By providing the central nervous system with information about the stretch and tension within the muscle, muscle spindles enable the body to respond appropriately to various movements.

On the other hand, Golgi tendon organs are located at the junction between muscles and tendons. They sense changes in muscle tension, specifically when the muscle contracts. This feedback is important to prevent excessive force that could potentially lead to injury. Together, these two structures allow for a comprehensive understanding of body position and movement, contributing to overall motor control and coordination.

The other choices do not correctly identify the structures involved in proprioception related to muscles and tendons. Red blood cells are primarily involved in oxygen transport, while neurons and glial cells are more about the broader nervous system function rather than specific sensory feedback from muscles and tendons. Stretch receptors and sensory neurons do provide sensory input but do not specifically identify the particular organs that are responsible for the sensory feedback related to proprioception