Chapter 8 muscles

The _________ articulates anteriorly with the talus

Navicular

Which tarsal bones articulate with the second cuneiform?

Navicular, first cuneiform

The transverse arch is formed by these structures

Navicular, metatarsal, cuneiform

The tarsal bone that articulates with the tibia and the fibula is the

Talus

The transmits the entire weight of the body to the calcaneus and other tarsal bones.

Talus or astragalus

Most of a person's body weight is absorbed by the talus and the calcaneus.

true

The "ball of the foot" normally carries about 40% of the weight of the body. What is the ball of the foot?

distal metatarsal

In a person with 5 toes on a foot, there would be 15 phalanges on that foot.

false

What structural feature of the arches allows them to absorb shocks?

flexible tendons and ligaments

Which bone is in direct contact with the first metatarsal?

medial cuneiform

A "fallen" arch is generally due to a weakened or damaged

medial longitudinal arch

Distally, the metatarsals articulate with the proximal row of phalanges to form the___________________________ joints.

metatarsophalangeal

Which tarsal is more medial?

second cuneiform

Arches of the foot are fully developed by what age?

12-13

The largest (and strongest) of the tarsals is the

Calcaneous

The calcaneus absorbs 90% of the body's weight every time a person walks.

False

The distal portion of the metatarsal is the base and the proximal portion is the head.

False

The fifth metatarsal is thicker than the others because it bears more weight

False

The metatarsals are numbered I-V, starting from the lateral side of the foot and moving medially.

False

The great toe is also called the pollex.

False (Hallux)

Following a playground accident, little Johnny was told he broke his hallux. What bone did he break?

Great toe

Both the medial and lateral parts of the longitudinal arch originate at the calcaneus.

True

Each phalanx contains a distal end called the head and a proximal portion called the base

True

The heel bone is called the

calcuenous

Tarsal bones include

cuneiform , calcaneous