A skydiver's parachute fails to deploy. After some struggle, his reserve chute deploys in time to save his life. However, his landing is harder than normal and he feels his knee slightly hyperextend
He shakes it off and goes about his normal routine. Later that day he begins experiencing knee pain. Two days later he notices that his knee "pops" when he crouches and soon discovers he has dislocated his femur on the knee. What muscle was likely injured initially?
A) Quadriceps femoris
B) Popliteus
C) Sartorius
D) Soleus
E) Tensor fasciae latae
B
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When pressure is applied to neural tissue, all of the following effects are possible except
A) a decrease in blood flow. B) a decrease in available oxygen. C) a change in neuron excitability. D) glial cells degenerate. E) neurons are triggered to divide.
In the following AP radiograph of the mouth and upper cervical part of the vertebral column, the arrow points to the:
A) uvula. B) spinous process of C3. C) dens (odontoid) process of C2 (axis). D) anterior tubercle of C1 (atlas). E) canine tooth.
Terminal and intramural ganglia are associated with the parasympathetic branch of the ANS
Indicate whether this statement is true or false.
Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?
A) heart B) kidney C) lungs D) liver