Muscle
This component of a sarcomere contains thin filaments that do not overlap with thick filaments.
What is the I band?
The ease with which the lungs expand (depends on elasticity of lungs and surface tension).
What is lung compliance?
When heart rate increases, this feature of an EKG decreases.
What is the PR interval?
This nerve stimulates gastric activity upon the sight, thought, smell, or taste of food.
What is the vagus nerve?
This enzyme, activated by calmodulin, facilitates myosin-actin binding and allows contraction to occur at a relatively slow rate.
What is myosin light chain kinase (MLCK)?
This structure is continuous with the sarcomere and acts as a "voltage sensor."
What is a T-tubule?
The maximum volume of additional air that can be expired from the end of a normal expiration.
What is expiratory reserve volume (ERV)?
During atrial contraction, these valves are the only heart valves that are open.
What are AV valves (mitral/tricuspid)?
This hormone decreases stomach emptying and stimulates the release of enzyme-rich pancreatic juice and the release of bile from the gallbladder.
What is cholecystokinin (CCK)?
This occurs in the alveolar arterioles when there is low alveolar pO2.
What is vasoconstriction?
This process is described by "electrical excitation triggering calcium release that produces a muscle contraction."
What is excitation-contraction coupling?
The volume of air remaining in the lungs at the end of a normal expiration.
What is functional residual capacity (FRC)?
A leaky semilunar valve is a heart murmur that is heard during what phase of the cardiac cycle?
What is diastole?
What is pernicious anemia?
This type of effect describes increasing conduction velocity via the AV node of the heart?
What is a positive dromotropic effect?
This action induces the myosin head to enter the "cocked" state.
What is hydrolysis of ATP?
The Tiffeneau index is reduced (less than 0.8) in this category of lung diseases.
What is obstructive lung disease?
These are the three components that determine stroke volume.
What are preload, contractility, and afterload?
These are the mechanisms by which amino acids are absorbed into the GI epithelium before entering the bloodstream.
This GI reflex is described by increased intensity of ileal segmentation triggered by gastric emptying.
What is the gastro-ileal reflex?
Type of smooth muscle found in the iris and ciliary body in which fibers operate singly rather than as a unit, allowing for finer motor control.
What are multiunit smooth muscle fibers?
The condition present in a patient with the following blood analysis:
pH: 7.26
pCO2: 28 mmHg
HCO3-: 18 mEq/L
What is partly compensated metabolic acidosis?
This heart valve can be auscultated at the left 5th intercostal space near the sterum.
What is the tricuspid valve?
This specific receptor is located on parietal cells to increase release of HCl into the stomach.
What are H-2 receptors (histamine)?
Defined by an increase respiratory rate to meet a higher metabolic demand.
What is tachypnea?