Which of the following statements about blood clotting is NOT true?
A. It is the formation of a thrombus.
B. It occurs after formation of a platelet plug in a damaged vessel.
C. It requires the presence of erythrocytes.
D. It is a result of a cascade of enzyme activation.
E. It involves positive feedback by thrombin.
C
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Answer the following statements true (T) or false (F)
1. Veins that drain the cerebral hemispheres are the internal cerebral veins. 2. The sigmoid sinus, which penetrates the jugular foramen, leaves the skull as the external jugular vein. 3. The cervical spinal cord and the posterior part of the skull are drained by the vertebral veins. 4. The temporal and maxillary veins drain into the internal jugular veins.
What is a small protein channel that allows the passage of ions and small molecules between cells?
A. Desmosomes B. Gap junction C. Tight junction D. Hemidesmosomes E. Adhesion belt
The anatomical region found between the lungs that extends from the sternum to the vertebral column and from the first rib to the diaphragm.
a) Epicardium
b) Abdominal cavity
c) Pericardium
d) Mediastinum
e) Thoracic cavity
Why is homeostatic regulation important to an organism?
What will be an ideal response?