The walls of alveoli and their associated capillaries both consist of simple squamous epithelium.
Answer the following statement true (T) or false (F)
True
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Select all that are in the medulla oblongata.
A. Ventral respiratory group B. Pontine respiratory center C. Pneumotaxic group D. Dorsal respiratory group E. Peripheral chemoreceptors
The proximal convoluted tubule is lined with a
A. cuboidal epithelium with a large surface area. B. simple squamous endothelium that makes a slick surface. C. simple columnar epithelium with a slick smooth surface. D. stratified squamous epithelium with a tough, durable surface. E. stratified squamous epithelium with a large surface area.
Contraction of smooth muscle requires:
A. myosin light-chain phosphorylation B. Ca++-dependent activation of calcineurin C. binding of Ca++ to troponin C D. an action potential in the smooth muscle cell E. inhibition of Rho kinase
The innermost, soft core of the hair shaft is the ________.
A. cuticle B. cortex C. soft keratin D. medulla E. bulb