Impotence is defined as an inability to achieve or maintain
A) an erection.
B) an emission.
C) ejaculation.
D) a normal sperm count.
E) blood flow.
The pineal gland is part of the
A) hypothalamus.
B) diencephalon.
C) midbrain.
D) mesencephalon.
E) 3rd ventricle.
Cells in the brain
A) can absorb glucose without insulin stimulation.
B) prefer fats to glucose for energy production.
C) are sensitive to insulin but not to glucagon.
D) are very sensitive to low concentrations of insulin.
E) can store glycogen, to be used later for glucose release.
The first menses is called the
A) menarche.
B) menopause.
C) climacteric.
D) emission.
The separation of positive and negative charges across the membrane creates a
________ difference, or voltage.
A) thermodynamic
B) permeability
C) dialysis
D) electrochemical
E) potential
Which of the following is directly responsible for an orgasm?
A) menarche
B) erection
C) emission
D) spermiogenesis
E) ejaculation
In an environment that is cooler than your body, you lose heat in a process called
A) radiation.
B) conduction.
C) convection.
D) evaporation.
E) thermal regulation.
The energy content of foods is commonly given in units of
A) grams.
B) kilograms.
C) kilocalories.
D) moles.
E) ounces.
Because skeletal muscle contractions demand large quantities of ATP, skeletal muscles
have
A) a rich nerve supply to ensure a rapid succession of action potentials.
B) massive creatine phosphate reserves for long periods of sustained contractions.
C) extra calcium reserves which can serve as fuel molecules during ATP synthesis.
D) adipose tissue between fibers to supply nutrients for ATP production.
E) many mitochondria and a rich blood supply.
Figure 23-2 Mechanics of Ventilation
How does the pressure “P4” at label “4” compare to the pressure “P5” at label “5”?
A) P4 is higher than P5 during inhalation and then lower during exhalation.
B) P4 is always higher than P5.
C) P4 is always lower than P5.
D) P4 always equals P5.
E) P4 is lower than P5 during inhalation and then higher during exhalation.