Answer the following statements true (T) or false (F)
1. Chronic release of excess thyroxine can cause a sustained increase in heart rate and a weakened heart.
2. Arterial blood supply to heart muscle is continuous whether the heart is in systole or diastole.
3. Trabeculae carneae are found in the ventricles and never the atria.
4. The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart's pulmonary and aortic valves.
5. Autonomic regulation of heart rate is via two reflex centers found in the pons.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
5. FALSE
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Directly causes mechanical motion.
A) Skeletal B) Nervous C) Integumentary D) Muscular
The internal environment of a multicellular organism is the fluid surrounding cells, through which life-sustaining exchanges are made
a. True b. False Indicate whether the statement is true or false
Which of the following is NOT a process of respiration?
A. Systemic respiration B. Ventilation C. Transport of blood gases in the blood D. Pulmonary respiration E. Voice production
The four vertebrae of the coccyx fuse into 1 bone by the age of about 18.
Answer the following statement true (T) or false (F)