This joint is a complex and weight-bearing joint, and is the most frequently injured joint in the body. The articular surfaces of the bones do not have complementary surfaces, so the stability of the joint depends mostly on its ligaments and the muscles that move the joint.
A: sacroiliac joint
B: shoulder joint
C: hip joint
D: knee joint
E: pubis symphysis
D: knee joint
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Areas of the nervous system that are dense in myelinated axons are referred to as
A) arachnoid mater. B) white matter. C) pia matter. D) dura mater. E) gray matter.
Muscles that attach to bone at one end and skin at another include which of the following?
A. The multifidus muscles B. The piloerector muscles C. The lumbricals D. The muscles of facial expression E. The sphincters
The wrist is composed of eight bones called ________.
A. metacarpal bones B. metatarsal bones C. digits D. tarsal bones E. carpal bones
Identify the correct sequence of the structures as they are involved in activity at a chemical synapse.
A. Synaptic cleft; presynaptic terminal; postsynaptic membrane B. Presynaptic terminal; postsynaptic membrane; synaptic cleft C. Postsynaptic membrane; synaptic cleft; presynaptic terminal D. Presynaptic terminal; synaptic cleft; postsynaptic membrane