What is the function of the pontine respiratory group?
A. To exert voluntary control over the respiratory system
B. When maximum chest expansion has been reached, the medulla oblongata stops sending inspiratory messages which prevents over inflation of the lungs.
C. To adjust the transitions from inspiration to expiration
D. None of these are correct.
Answer: C
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Which of the following statements concerning hair is false?
A) The medulla is the soft core of the hair. B) The cortex of the hair is composed of hard keratin. C) Terminal hairs are heavy and more darkly pigmented than other types of hair. D) Club hair is hair that has ceased growing. E) Scalp hairs grow constantly throughout life.
Chemical digestion reduces large complex molecules to simpler compounds by the process of ________.
A) mastication B) catabolism C) anabolism D) fermentation
Presence of a synovial cavity, articular cartilage, synovial membrane, and ligaments are characteristics of what type of joint?
A) hinge joint B) symphysis C) suture D) synchondrosis
What kind of tissue is the forerunner of long bones in the embryo?
fibrocartilage hyaline cartilage elastic connective tissue dense fibrous connective tissue