pixiv Encyclopedia has updated the Privacy Policy as of May 28, 2024. Revision history

Feet

Feet are the lower extremities of the human body, consisting of bones, muscles, and tissues. They support body weight, enable walking, running, and balance, and are vital for movement and posture.
Contents [hide]

Overview編集

The feet are complex structures at the lower end of the human body, essential for movement, balance, and overall mobility. Each foot is made up of 26 bones, numerous muscles, ligaments, tendons, and other soft tissues that work together to support the weight of the body and facilitate walking, running, and other activities. The feet also play a critical role in maintaining posture and absorbing shock during movement.


Key Components of the Feet編集

Bones編集

The human foot has 26 bones, divided into three sections:

  • Tarsals (7 bones): Form the ankle and the back part of the foot.
  • Metatarsals (5 bones): The long bones in the middle of the foot.
  • Phalanges (14 bones): The toes, with each toe typically having three bones (except the big toe, which has two).

These bones form the framework of the foot and provide stability and structure.

Joints編集

The bones of the foot are connected by joints that allow movement and flexibility. Some of the key joints include:

  • Ankle Joint: Connects the foot to the leg, allowing for up-and-down motion.
  • Subtalar Joint: Allows the foot to twist side-to-side.
  • Metatarsophalangeal Joints: Found at the base of the toes, permitting flexion and extension of the toes.

Muscles編集

The foot contains both intrinsic and extrinsic muscles:

  • Intrinsic Muscles: Located within the foot, these muscles help control toe movement and support the arches.
  • Extrinsic Muscles: Located in the lower leg, they control the movement of the foot and toes.

These muscles enable the foot to perform complex motions necessary for activities like walking, running, and jumping.

Ligaments and Tendons編集

Ligaments are fibrous tissues that connect bones to other bones, while tendons connect muscles to bones. Some key ligaments in the foot include the plantar fascia, which supports the arch, and the Achilles tendon, which connects the calf muscles to the heel bone.

These structures provide stability, limit excessive movement, and facilitate efficient motion.

Arches編集

The feet have three main arches:

  • Medial Longitudinal Arch: The arch running along the inside of the foot.
  • Lateral Longitudinal Arch: A smaller arch on the outer side of the foot.
  • Transverse Arch: Runs across the foot, from side to side.

These arches distribute body weight, help with shock absorption, and contribute to balance and flexibility during movement.


Functions of the Feet編集

Support and Weight Distribution編集

The feet bear the entire weight of the body. They are designed to distribute this weight efficiently across the bones, joints, and muscles. The arches of the feet act as shock absorbers, helping to minimize the impact on the rest of the body.

Movement and Locomotion編集

The feet are crucial for walking, running, and other forms of locomotion. They provide the leverage needed for the push-off phase of walking or running, allowing for forward motion. The toes play an essential role in grip and stability during these activities.

Balance and Posture編集

The feet are integral to maintaining balance. They have sensors (proprioceptors) that send feedback to the brain, helping to adjust posture and avoid falls. This feedback allows for smooth transitions in movement and stability during standing.

Shock Absorption編集

During activities like running, jumping, or even walking, the feet absorb the shock created by impact with the ground. The arches, ligaments, and muscles work together to dampen this impact and protect the body from injury.


Related Illustrations編集

センシティブな作品Aru^^

Time to pick your Bot lane159


Article in Other Languages編集

フィート

Related Articles

Parent Article

Child Article

Sibling Article

Posts on pixivShow more on pixiv

Comment(s)

Report a problem

0/3000

About issues in articles If you find something off in an article, please go ahead and edit it yourself.
If you see that someone else keeps doing illicit activities, please go to their profile and report them via the Report a problem button.

Reported successfully

You can now edit a section by clicking on the header