Which plasma proteins are involved in blood clotting?
A. Albumin
B. Fibrinogen
C. Hemoglobin
D. Prothrombin
Ans:
B. Fibrinogen
D. Prothrombin
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Pacemaker cells isolated from the SA node generate action potentials at ________ beats per minute
A) 20-40 B) 40-60 C) 80-100 D) 100-140 E) 140-180
Billy can make only one type of antibody for the ABO blood group and he cannot make the antibody for the Rh factor. Which blood type(s) can you be sure cannot be given safely to Billy?
a. O+ b. AB- c. B+ d. A+ e. O-
An 18-year-old boy is brought to the ER after suffering a gunshot wound to his back. Radiographic imaging reveals extensive damage to the neural arches of the L1 and L2 vertebrae, with bone and bullet fragments lodged in the vertebral canal at these levels. Comprehensive neurologic examination indicates destruction of the sacral segments of the spinal cord. Which of the following functional outcomes is most likely present?
(A) Reduced sweat gland secretion in the abdominal wall (B) Decreased motility in the duodenum (C) Increased motility in the ileum (D) Paralysis of the psoas major muscle (E) Relaxation of the teniae coli in the descending colon
You go to the movies after a long day and you begin to nod off as soon as the movie starts. Your head starts to lower a little, but a reflex causes your head to rise. This is called the ________ reflex.
A. flexor (withdrawal) B. withdrawal C. tendon D. crossed extension E. stretch (myotatic)