ch.9 assessment

In a pivot joint, the rounded or pointed surface of one bone articulates with a ring formed partly by another bone and partly by a ligament. True False

True

Which factors help to keep the articular surfaces in contact and affect the range of motion? structure or shape of articular bones strength and tension (tautness) of the joint ligaments arrangement and tension of the muscles contact of soft parts all of these choices

all of these choices

Which of the following could contribute to a decreased range of motion if a person wore a cast for several weeks which prohibited movement at a particular joint, such as the elbow? a decrease in synovial fluid thus reducing the lubrication of the joint muscle atrophy thus resulting in weakness in the muscles that would move and stabilize the joint reduced flexibility of the tendons and ligaments at the joint all of these could be contributing factors none of these are factors that would limit range of motion

all of these could be contributing factors

Which type of joint confers the greatest range of motion? hinge joint planar joint saddle joint ball-and-socket joint condyloid joint

ball-and-socket joint

A gomphosis is which type of joint? fibrous and a suture fibrous and a syndesmosis cartilaginous and a synchondrosis cartilaginous and a symphysis synovial

fibrous and a syndesmosis

While the bones of this joint may fracture, they rarely become dislocated. The articular capsule and accessory ligaments of this joint make it one of the strongest structures in the body. temporomandibular joint elbow joint shoulder joint hip joint knee joint

hip joint

This joint is the largest and most complex of the body, and consists of three joints contained within its synovial cavity. temporomandibular joint elbow joint shoulder joint hip joint knee joint

knee joint

Which of the following would not be a common occurrence at joints due to aging? ligaments become stretched and lengthen the amount of synovial fluid produced decreases osteoarthritis due to wear and tear on joints can occur articular cartilages become thinner exercise can help an older person maintain their range of motion

ligaments become stretched and lengthen

Some synovial joints contain special crescent-shaped pads that provide additional shock absorption, and provide for a better fit between the articulating surfaces of the bones. These special pads are called __________. menisci labra fat pads bursae tendon sheaths

menisci

The bodies of adjacent vertebrae are connected by pads of fibrocartilage (the intervertebral discs). The articulations between adjacent vertebrae are called __________. synchondroses symphyses gomphoses synovial joints syndesmoses

symphyses

A fibrous joint in which there is a greater distance between the articulating surfaces and more dense irregular connective tissue than in a suture is called a gomphosis. synchrondrosis. symphysis. synostosis. syndesmosis.

syndesmosis.

Which of the following is an example of a uniaxial joint? the saddle joint between the thumb and trapezium of the wrist the hinge joint of the elbow the joint between a metacarpal and the proximal phalanx the ball-and-socket joint between the scapula and humerus the plane joints between the carpal bones (wrist)

the hinge joint of the elbow

Which of the following contributes the most to holding the head of the humerus in the glenoid cavity in the shoulder joint? the articular capsule the coracohumoral ligament the glenohumoral ligaments the glenoid labrum the muscles of the rotator cuff

the muscles of the rotator cuff

When walking down stairs or a steep hill, the knee is flexed. Which structure prevents the tibia from sliding too far posteriorly, and the femur from sliding too far anteriorly? the patellar ligament the anterior cruciate ligament the posterior cruciate ligament medial meniscus lateral meniscus

the posterior cruciate ligament

Which of the following is not a function of synovial fluid? to provide lubrication in the joint and reduce friction between articular surfaces to act as a medium for the diffusion of oxygen and nutrients to act as a medium for the diffusion of metabolic wastes such as carbon dioxide to maintain a sterile environment within the joint cavity shock absorption

to maintain a sterile environment within the joint cavity