Ventilating the gills by taking water in through the gill openings, as well as using the gill openings for water ejection, is not a very efficient way of doing things. Why, then, do adult lampreys ventilate their gills this way?

What will be an ideal response?


A lamprey is parasitic, with its mouth affixed to a prey animal to suck blood, so it cannot use its mouth to take in water.

Anatomy & Physiology

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Damage to which cranial nerve would be associated with both sensory and motor deficits?

What will be an ideal response?

Anatomy & Physiology

What is the structure that is responsible for secreting the hormone melatonin?

A) pineal gland B) cingulate gyrus C) mammillary body D) medulla oblongata

Anatomy & Physiology

Substances that cause an exaggerated immune response are called __________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

Oxytocin is a strong stimulant of uterine contraction and adheres to a positive feedback mechanism.

a. true b. false

Anatomy & Physiology