Final answer:
The plantar fascia, or plantar aponeurosis, attaches to the calcaneus bone at the heel and extends to the bases of the toes, supporting the arch of the foot and aiding in movement.
Step-by-step explanation:
The plantar fascia, also known as the plantar aponeurosis, is a thick band of connective tissue that runs across the bottom of your foot, from the heel to the toes. It attaches to the calcaneus bone at the heel and extends forward to the bases of the toes. The primary function of the plantar fascia is to provide support for the longitudinal arch of the foot during weight-bearing activities and motion. Inflammation of this tissue is commonly known as plantar fasciitis, which can cause heel pain, especially in runners. Supporting the structure of the foot, the plantar fascia works together with other intrinsic foot muscles originating within the foot to contribute to movements of the toes.