If a neuron is exposed to tetrodotoxin ,sodium ions will be unable to cause the action potential,therefore being blocked from passing any impulses or receiving them...
Pediatric patients diagnosed with bronchial asthma are treated with the same medications as adults, albeit in dosages based on the weight of the child (usually lower than the adult dose). Pediatric patients usually use a spacer between the inhaler and after a puff, he or she must be instructed to breathe in and out for 10 times. There is an option to use a nebulizer to give the medication but for pediatric patients (they are usually afraid of the nebulizer), this is less effective.
<em>The primary caregiver should also be able to recognize an asthma attack at home or at school. He or she should also be able to know how to operate the inhaler.</em>
True, diabetes can contribute to gum disease.
I say A because the way the question is formatted it is clear that...
Since color blindness is a sex-linked recessive genetic disorder, it is carried by a X chromosome. Males (XY) are affected if they get the affected X from their mother, since males only have one X, and it is therefore always expressed. Females (XX), however, get one X from their mother and the other from their father. So both parents have to pass a color blind X to be affected (both alleles, by the definition of recessive).
Even though the mother is not affected, she's carrying it because her father was color blind. And the father is not affected. However, in Turner's Syndrome, one X is destroyed after fertilization, so the other X is the daughter's primary (only remaining) X. Note: Turners only affects females. Therefore, this is a rare situation in which a daughter gets affected by an X-linked recessive condition.
