Neural tissue develops in the embryo from a portion of the
A. endoderm.
B. ectoderm.
C. mesoderm.
Answer: B
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Which one of the following incorrectly identifies the parts of a lever within the human body?
A. a bone is the rigid bar B. a joint is the axis of rotation C. a muscle insertion provides the point of force D. COM of the moving segment is the point of resistance E. all of the above are correct
A cat presents to a clinic with difficulty breathing, lethargy, and cyanosis. The veterinarian auscultated the thoracic cavity and politely asked to have a radiograph taken of the thorax. Dx: pleural effusion. A thoracocentesis was performed and 300 cc of fluid was aspirated. Rx: Bronchodilator BID. A thorac/o/centesis is aspiration of fluid from the:
A) lungs using a needle/catheter B) chest cavity using a needle/catheter C) abdomen using a needle/catheter D) urinary bladder using a needle/catheter E) heart using a needle/catheter
A pacemaker is a surgically implanted electronic device that regulates the patient's heartbeat.?
Indicate whether the statement is true or false
If T-lymphocytes that failed the negative selection test were not destroyed, the immune system would likely
A. be unable to recognize a particular class of pathogen. B. exhibit more negative membrane potentials. C. exhibit very delayed activity. D. cause autoimmune disorders.