Which of the following is an example of a uniaxial joint?
A: saddle joint between the thumb and trapezium of the wrist
B: hinge joint of the elbow
C: joint between metacarpal and proximal phalyanx
D: ball and socket joint between scapula and humerus
E: plane joints between carpal bones (wrist)
B: hinge joint of the elbow
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Which of the following muscles is the prime mover for extending the elbow?
A. Triceps brachii B. Biceps brachii C. Pectoralis major D. Latissimus dorsi E. Serratus anterior
Small, wandering cells that engulf cell debris and pathogens in the CNS are called
A) astrocytes. B) satellite cells. C) oligodendrocytes. D) microglia. E) ependymal cells.
How do the lymphatic and immune systems contribute to osteoporosis?
A. Excessive smoking lowers estrogen levels, which increases bone loss. B. Immune cells resist infections and release chemicals that promote tissue repair. C. Calcium ions released from the bones are excreted. D. Lack of exposure to sunlight reduces vitamin D production and decreases calcium absorption. E. Decreased estrogen levels following menopause contribute to the disease.
Movement of food through the digestive tract results from the action of ________ muscle.
A. smooth B. skeletal C. striated D. cardiac E. voluntary