Which structural classification of joints is characterized by being immovable and composed of fibrous, dense connective tissue?

A. Parasympathetic nervous system: The parasympathetic system promotes “rest and digest” activities, slowing the heart rate, stimulating digestion, and conserving energy. It functions in opposition to the fight-or-flight response.

B. Central nervous system: The central nervous system, consisting of the brain and spinal cord, processes and integrates information but does not directly mediate the autonomic fight-or-flight response. It coordinates signals but relies on the sympathetic system to execute them.

C. Somatic nervous system: The somatic nervous system controls voluntary movements of skeletal muscles. It does not regulate involuntary responses such as increased heart rate, dilation of pupils, or bronchodilation associated with stress.

D. Sympathetic nervous system: The sympathetic nervous system activates the fight-or-flight response by increasing heart rate, dilating airways, redirecting blood flow to muscles, and releasing adrenaline. It prepares the body for rapid, intense physical activity during stress or danger.

A. To connect muscle to muscle: Connections between muscles are generally formed by aponeuroses or fascia, not tendons, and this is not their primary role in movement.

B. To connect muscle to bone: Tendons are strong, fibrous connective tissues that attach muscles to bones, allowing the force generated by muscle contraction to move the skeleton efficiently.

C. To store energy for muscle contraction: While elastic components in muscles and tendons can store some energy, the primary function of tendons is structural connection, not energy storage.

D. To protect the muscle during contraction: Tendons provide stability and transmit force, but they do not directly shield muscles from injury during contraction.