A broad accumulation of stratified drift deposited adjacent to the downstream edge of an end moraine is a(n) ________. During the most recent ice age, glaciers covered about ________ percent of Earth's land area. The most abundant chemical sedimentary rock is ________.
The distal end of the femur articulates with the tibia in the lower leg and the patella or knee cap. The tibia below does not articulate with the patella. Between the condyles is the patellar surface that articulates with the patella or knee cap. These landmarks are important attachments for ligaments and muscles which will be discussed later in this unit. Another important anatomical component of the knee are the menisci.
See Ligament. The contacting surfaces of the bones of a diarthrodial joint are covered with articular cartilage, an avascular, highly durable hydrated soft tissue that provides shock absorption and lubrication functions to the joint (see illustration).Articular cartilage is composed mainly of water, proteoglycans, and collagen.oints may be movable, for example, the spherical shoulder joint, or immovable, for example, the joint between a rib and the sternum. The range of joint movements is measured in the degrees of the angles formed by the articulating bones.