A horizontal section through the tarsus would separate the_______________________ from the _______________.
The correct answer and explanation is :
A horizontal section through the tarsus would separate the dorsal (top) surface of the foot from the plantar (bottom) surface of the foot.
Explanation:
The tarsus is a region of the foot that comprises seven bones, located between the lower leg and the metatarsal bones of the foot. It consists of the talus, calcaneus (heel bone), navicular, cuboid, and three cuneiform bones. When a horizontal (or transverse) section is made through the tarsus, it divides the foot into two parts—essentially separating the dorsal side from the plantar side.
- Dorsal surface: This refers to the top of the foot, which faces upward when a person is standing. The dorsal side contains various structures such as skin, muscles, tendons, and ligaments. This surface is primarily involved in the extension of the foot, as in the action of lifting the foot.
- Plantar surface: The plantar surface refers to the bottom of the foot, which faces the ground when standing or walking. This surface is crucial for weight-bearing and supports the entire body’s weight during standing and walking. The plantar side contains skin, muscles, ligaments, and tendons as well, including the long plantar ligament and the intrinsic foot muscles, which are important for maintaining balance and providing a strong grip while walking.
A horizontal section through the tarsus typically implies a cut that is parallel to the ground. This type of anatomical section divides the foot into upper and lower parts, allowing for a detailed view of the various structures on both sides of the foot. The tarsus is an essential area of the foot, as it houses the bones that form the ankle and contribute to the mobility of the foot. In clinical settings, understanding the anatomy of the tarsus is critical for diagnosing foot injuries, disorders, or malfunctions in the musculoskeletal system.