exam 4 animal physiology

At the Apical membrane of the proximal convoluted tubule ____ movement into the cell is coupled to _____ movement due to a cotransporter.

Glucose; Na

In the proximal convoluted tubule ____ and ____ are the product of carbonic anhydrase.

HCO3-:H+

Juxtamedullary Nephrons utilize ____ multiplication to generate hypersmotic conditions in the real medulla.

Counter current

Most solute and water absorption in the nephron happens at the ____

Proximal tubule

An elevation in blood volume will cause an increase in stretch of the Atria resulting in the release of ____ and urine production will ____

Atrial natriuretic peptide: increase

An animal that consumes a meal will experience an increase in metabolic rate

True

Digestion of lipids and _____ begins in the oral cavity

carbohydrates

In smooth muscle intracellular Ca will bind to ____ and resulting in _____. 

calmodulin; light chain phosphorylation

An increase in protein content in the stomach will result in a decrease in pH due to an increase in _____ stimulation

Gastrin

The change in stomach pH that occurs when a bolus fills it is due to the release of _____ from ____ cells

HCl; Parietal

As body temperature increases above the preferred temperature, an animal in a windy environment will move up in the air column to lose heat via _________.

Convection

Consider the following scenario. You are monitoring an animal that maintains body temperature relatively constant at all times. What does this tell you about the classification of this animal from a thermoregulatory perspective?

It is a homeotherm

From among the following list of animals, which would lose heat at the fastest rate per unit mass?

A mouse

The __________ of a resting endotherm is the range of ambient temperature where its metabolic rate is constant.  

Thermoneutral zone

The slope of the line at the lower end of the metabolic rate verse ambient temperature of an endotherm provides information about the insulation  the animal may possess.

True

What is the most abundant gas in the atmosphere?

Nitrogen

Are Steroid hormones hydrophilic?

They are hydrophobic molecules that can easily pass through cell membranes.

A cell will most likely hyperpolarize when __________ enters it.

Chloride ions

Intensity of a sensory stimulus is coded as action potential size?

false

Motor neurons release __________ into the neuromuscular synapse, which may generate a depolarization at the motor end plate.  

Acetylcholine