The tough, fibrous vascular tissue that encloses a long bone is the ________.
Fill in the blank(s) with the appropriate word(s).
periosteum
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This movement occurs when you turn the sole of your foot inward to face the other foot.
A. Eversion B. Inversion C. Pronation D. Flexion
What is the role of the perichondrium that surrounds the cartilaginous model early in the process of endochondral ossification?
A. It forms trabeculae that accumulate osteoid. B. It produces osteoclasts. C. It produces red bone marrow. D. It forms the epiphysial plate. E. It produces chondrocytes, and the model grows.
Based on what you know about bone growth, why are newborns so much more flexible than adults?
A. Their joints are still composed of cartilage. B. Osteoclast activity is greater than osteoblast activity. C. Their ligaments have not developed fully yet. D. The epiphysial plates are fused.
The specialized vessels that carry blood containing releasing hormones from the brain to their target gland make up the
A. hypothalamus-pituitary portal system. B. circle of Willis. C. common jugular veins. D. hepatic portal system. E. adrenal regulatory pathway.