When walking down stairs or a steep hill, the knee is flexed. Which structure prevents the tibia from sliding too far posteriorly, and the femur from sliding too far anteriorly?
A: patellar ligament
B: ACL
C: PCL
D: medial meniscus
E: lateral meniscus
C: PCL
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A sickle-shaped vertical partition that divides the left and right cerebellar hemispheres is the
A. diaphragma sellae. B. falx cerebelli. C. tentorium cerebelli. D. superior sagittal sinus. E. falx cerebri.
The pterygopalatine fossa communicates with the nasal cavity via the
A. foramen ovale. B. pterygomaxillary fissure. C. inferior orbital fissure. D. sphenopalatine foramen. E. incisive canal.
The thymus is ________ to the sternum
A) lateral B) superficial C) deep D) anterior
The figure illustrates a detailed drawing of the neuromuscular junction. What does "A" represent?
A. synaptic vesicles B. synaptic cleft C. sarcolemma D. presynaptic terminal E. postsynaptic membrane