Sphere-shaped cells containing nuclei are called:
A) erythrocytes.
B) leukocytes.
C) antigens.
D) thrombocytes.
B
Explanation: A) Erythrocytes do not contain nuclei.
B) Correct.
C) Antigens are foreign proteins that stimulate the immune response.
D) Thrombocytes are many different shapes.
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bronchiectasis : Abnormal ________________ of the bronchi
Fill in the missing word in the definition for the key term.
The abbreviation PDA stands for a congenital heart anomaly in which the connection between the aorta and pulmonary artery fails to close at birth
Indicate whether the statement is true or false
The relationship between a student's skill level and his/her interest in voluntary participation in physical activities is best described as:
A) positive. B) unrelated. C) negative. D) curvilinear. E) skewed.
Heart rate reserve (HRR) is calculated by ____
A) ?adding resting heart rate to blood pressure B) ?multiplying resting heart rate times 3 C) ?subtracting resting heart rate from maximal heart rate D) ?subtracting age from the highest exercise heart rate E) multiplying maximal heart rate by 0.7