Parasympathetic innervation influences the heart rate, but generally tends to have no direct effect on the force of contractions.
Answer the following statement true (T) or false (F)
True
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Lymphatic organs differ from lymphatic tissues in what way?
A) They contain T lymphocytes and lymphatic tissues do not. B) They are found in the digestive tract and lymphatic tissues are found in the thorax. C) They are surrounded by a fibrous capsule and lymphatic tissues are not. D) They cannot produce antibodies, whereas lymphatic tissues can. E) They occur throughout the body except in the head.
The two types of osseous tissue are
A) spongy and compact bone. B) spicular and trabecular bone. C) trabecular and osteoclastic bone. D) Haversian and lamellar bone. E) None of the answers are correc
When blood pressure is normal, the receptors in arterial walls fire action potentials
A) very seldom. B) continuously.
Which of the following is an example of convection?
A. Warming a chair by sitting in it B. Infrared radiation C. Exposure of the body to cold air D. Losing water to the air E. Sweating