Air enters the respiratory passageways when the pressure inside the lungs is lower than the:

blood pressure
atmospheric pressure
abdominal pressure
arterial pressure
all of the choices are correct


atmospheric pressure

Anatomy & Physiology

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Fast-oxidative (type IIa) fibers

a. contain very few mitochondria b. can be converted into fast-glycolytic fibers by regular resistance activities c. are most abundant in muscles specialized for maintaining low-intensity contractions for long periods of time without fatigue d. have characteristics b and c e. have none of the above characteristics

Anatomy & Physiology

Of the spinal meninges, the middle one is the ________ mater

A) epidural B) pia C) subdural D) arachnoid E) dura

Anatomy & Physiology

When NAD+ is ________ it becomes NADH. When NADH is ________ it becomes NAD+

A) phosphorylated; deaminated B) reduced; oxidized C) made; recycled D) phosphorylated; dephosphorylated E) oxidized; reduced

Anatomy & Physiology

Which condition listed gives rise to individuals that are

somewhat mentally disadvantaged, sterile males with undeveloped testes, scant body hair, and enlarged breasts? a) Emesis gravidarum b) Deformation c) Turner's syndrome d) Breech presentation e) Klinefelter's syndrome

Anatomy & Physiology