How Do You Spell MUSCULUS PLANTARIS?

1. Musculus plantaris refers to a muscle found in the lower leg of humans and some primates, also known as the plantar muscle. It is situated in the superficial layer of the posterior compartment of the leg, running from the back of the knee joint to the heel bone (calcaneus).

   The musculus plantaris arises from the lateral condyle of the femur, sharing its origin with the larger gastrocnemius muscle, which lies above it. From there, it descends along the calf, forming a long, thin tendon that passes behind the knee joint and inserts into the tuberosity of the calcaneus, blending with the tendons of other muscles such as the gastrocnemius and soleus.

   The primary function of the musculus plantaris is to assist in plantar flexion of the foot, which is the movement of pointing the toes downward, enabling actions like walking, jumping, and running. Additionally, it aids in flexing the knee joint and stabilizing it during these movements.

   The musculus plantaris is classified as a vestigial muscle since it is absent or underdeveloped in about 9-10% of the human population. This suggests that it might have had a more significant role in our evolutionary ancestors but became functionally less important as humans adapted to bipedal locomotion. Its presence or absence does not significantly affect the overall functioning of the lower leg or limit the individual's ability to perform regular physical activities.

2. Origin, external supracondyloid ridge (external epicondyle) of femur; insertion, inner margin of tendo Achillis and internal annular ligament of ankle; nerve supply, tibial; action, extends foot (plantar flexion).

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

Common Misspellings for MUSCULUS PLANTARIS

The word "musculus plantaris" is derived from Latin.

The term "musculus" translates to "muscle" in English and originates from the Latin word "musculus", meaning "a little mouse" or "a muscle", as muscles were thought to resemble little mice when they contracted.

The word "plantaris" comes from the Latin word "planta", meaning "sole of the foot". Thus, "musculus plantaris" refers to the muscle located in the sole of the foot.