False, the body has its adaptive defenses.
Innate defense is the first line of protection against all diseases and infections, but adaptive immunity also has the power to fight off pathogens and infections brought on by external objects.
Therefore, it is not accurate to say that our body would be totally unprotected since adaptive immunity will also manifest itself to get rid of the disease-causing substance. This is a false assertion, then.
The correct answer is that adaptive immunity will combat pathogens or foreign body infections if innate immunity fails to protect against a disease or infection because adaptive immunity also works to eradicate the disease-causing agent.
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Recognize pathogens is the b cells’ job
A typical memory aid that helps in remembering the order in which sound travels from the peripheral to the central components of the auditory pathway would be E.C.O.L.I.M.A.
Sound (high or low-frequency sounds) at first gets to the hair cells of the Ear receptors (E) in Cochlea and cranial nerve number 8 (CN VII), then it gets to the Cochlear nuclei (C) which are cells dedicated to these high or low-frequency sounds.
At the Superior Olivary nucleus (O) sound is localized before it gets to the midbrain - Lateral lemniscus (L) and Inferior colliculus (I). The inferior colliculus receives auditory nerve fibers from ipsilateral superior olivary nuclei through the lateral lemniscus.
Sounds then get to the thalamus at the Medial geniculate body (M) which receives nerve fibers from the inferior colliculus; eventually sounds then get to the auditory cortex.
In summary, ECOLIMA is an easily understandable mnemonic device to help remember how sound waves move from the external ears to the auditory nerves and cortex.
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Answer:
because the sodium channels have a refractory period following activation, during which they cannot open again and it ensures that the action potential is propagated in a specific direction along the axon.