What would be the clinical significance of a positive Babinski sign in an adult?
A) damage to the descending (motor) tracts in the spinal cord, indicating possible spinal cord damage
B) muscle spindle damage
C) incomplete myelination
D) sensory neuron damage in the spinal cord
A
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What forms the superior portion of the sternum?
A. Xiphoid process B. Gladiolus C. Manubrium D. Body E. Clavicle
The cervical and lumbosacral enlargements are wide points in the spinal cord marking the emergence of motor nerves.
Answer the following statement true (T) or false (F)
The MHC (major histocompatibility complex) class molecules
A. are found in the nucleus of cells. B. allow the immune system to respond to antigens inside cells. C. are only found on B cells. D. are lipoproteins on cell surfaces. E. do not attach to plasma membranes.
Visceral reflex arcs can bypass CNS neurons in ________ reflexes
A) short B) long C) both short and long D) neither short nor long