Water loss through the epidermis could cause a serious threat to health and well-being. Which of the following protects us against excessive water loss through the skin?
A) Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces.
B) The size and shape of the cells that make up the stratum spinosum, as well as the thick bundles of intermediate filaments.
C) The dermis is the thickest portion of the skin and water cannot pass through it.
D) Fat associated with skin prevents water loss.
A) Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces.
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The lining of the gastrointestinal tract that allows for absorption and secretion is
A. simple columnar epithelium. B. areolar connective tissue. C. keratinized stratified squamous epithelium. D. simple squamous epithelium. E. nonkeratinized stratified squamous epithelium.
What is happening in the heart between the QRS and T waves?
A. Atrial systole B. Ventricular repolarization C. Ventricular diastole D. Ventricular systole E. Atrial repolarization
An increasing peak expiratory flow reading in a patient with respiratory distress suggests that the patient is:
A) experiencing worsened hypoxemia. B) no longer experiencing bronchospasm. C) responding to bronchodilator therapy. D) in need of further bronchodilator therapy.
Atrial hypertrophy would probably cause an enlarged P wave on an electrocardiogram.
Answer the following statement true (T) or false (F)