Which of the following is incorrect pertaining to the innervation of the lung or any part of the pleura?
A) It receives both sympathetic and parasympathetic fibers.
B) Cough reflex fibers (visceral afferents) accompany the vagus nerve.
C) Pain fibers supplied by intercostal nerves.
D) Pain can be referred to the shoulder.
E) Intrinsic smooth muscle is supplied by phrenic nerve.
Ans: E
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A corpus callosotomy is a procedure in which the corpus callosum is cut to decrease the severity of certain types of seizures. After the procedure, some patients have extreme difficulty performing actions related to the non-dominant hemisphere, like using their non-dominant hand. What might be the basis for this side effect?
A. The corpus callosum separates the two hemispheres. Cutting the structure allows the dominant hemisphere to interfere with the motor control within the non-dominant hemisphere. B. The corpus callosum handles some somatic motor neurons. Cutting the structure will stop motor function signals from one hemisphere. C. The corpus callosum contains neurons that cross from one hemisphere to the other. Cutting the structure prevents the dominant hemisphere from controlling motor function in the non-dominant hemisphere. D. The corpus callosum is the seat of control for fine motor function and positioning. Cutting the structure will prevent the onset of seizures, but also hinders fine motor function and causes confusion about where a body part is at any given time.
What process shuffles the alleles and causes homologous chromosomes to no longer be identical during meiosis?
A) synapsis B) cytokinesis C) crossing over D) formation of tetrads
After puberty, which epithelium lines the vagina?
A) Simple cuboidal epithelium B) Transitional epithelium C) Simple squamous epithelium D) Stratified squamous epithelium E) Simple columnar epithelium
A urinary tract infection that invades the urinary bladder is called
A. cystitis. B. urethritis. C. pyelonephritis.