Lymph nodes contain two distinct regions: the inner ________ and the outer ________
A) medulla; cortex
B) capsule; cortex
C) cortex; medulla
D) cortex; germinal center
A
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The outermost layer of the epidermis is the stratum basale and the innermost layer is the stratum corneum.
Answer the following statement true (T) or false (F)
. Which organ is not part of the gastrointestinal tract?
A. Esophagus B. Large intestine C. Stomach D. Oral cavity E. Liver
Matching
A) Alveolar duct B) Segmental (tertiary) bronchi C) Type I alveolar cells D) Respiratory bronchioles E) Type II alveolar cells 11) NO exchange of gases occurs here. 12) Secrete a fluid containing surfactant. 13) Where the respiratory zone of the lungs begins. 14) Composed of simple squamous epithelium. 15) Terminates in alveoli. 16) Composed of cuboidal cells. 17) The respiratory membrane is composed of fused basement membrane of the capillary walls and ________.
What happens when the diaphragm contracts?
A. The size of the thoracic cavity decreases and air flows into the lungs. B. The size of the thoracic cavity decreases and air pressure in the thorax drops. C. The size of the thoracic cavity increases and air flows out of the lungs. D. The size of the thoracic cavity increases and air pressure in the thorax increases. E. The size of the thoracic cavity increases and air flows into the lungs.