If someone had extra long chordae tendineae on their mitral valve this would most likely affect the valve how and why?

why does the maximum contractile force generated by heart increase with preload?

1. Describe what happens to the respiratory system during high intensity sport performance such as cheerleading to increase ventilation rate (i.e. muscles involves, partial pressures of O₂ & CO₂, RCC inputs, etc.).

Direction of Muscle Fibers: In relation to an imaginary line usually in the midline of the body or the longitudinal axis of a bone.

Number of Origins:

Location of Attachments: Named according to their points of origin and insertion

Muscle Action: (Flexor, Extensor, Abductor, Adductor)

If blood calcium levels drop, the parathyroid gland releases the hormone called  ____________ . This hormone has multiple effects.

(1) The hormone stimulates bone cells to break down bone tissue and  ____________  calcium ion into the blood.

(2) The hormone stimulates the  ____________  to conserve calcium ions, preventing their excretion, and to activate vitamin  ____________  which increases calcium uptake from the diet.

(3) The hormone increases the  ____________  of calcium from the intestines.

The result of the these hormonal effects is to  ____________  blood calcium levels.

31. The most common type of sinus arrhythmia, the one related to respiration, is:

a. a normal phenomenon commonly seen in middle aged adults

b. caused by decreased vagal activity

c. caused by the sympathetic effect on the SA node

d. extremely rare in children

20. Monitoring lead MCL1 is obtained by attaching the positive electrode from lead ______________:

a. II, to the left chest below the clavicle

b. II, to the middle of the sternum at the level of the fourth intercostal space

c. III, to the left side of the sternum in the fourth intercostal space

d. III, to the right side of the anterior chest in the fourth intercostal space next to the sternum

10. The vagus nerve is part of the parasympathetic nervous system. Slowing of the heart rate by the vagus nerve occurs when:

a. The nerve fires more rapidly

b. The nerve is blocked by atropine

c. The nerve is severed

d. The patient is given a stimulant

Answer true/false for the following:

1. The power stroke is generated during the contraction-relaxation phase.

2. Reformation of cross bridges occurs during the excitation-contraction phase.

1. what part of the digestive process are under voluntary control?

2. How do you suppose damage to the vagus nerve (a parasympathetic nerve) would impact digestive processes?

3. what digestive functions does the pancreas perform?

which belongs to each sentence?

In [external/ or cellular] respiration, these gases are exchanged between the body's tissues and the outside environment by way of the respiratory system. In [ external/ or cellular] respiration, these gases are used and created by the metabolic processes of the cells.

[alveolar capillary membranes, type 2 alveolar cells, type 1 alveolar cells] make up the main structure of the alveolar wall. The walls of the alveoli  are very thin, separated from the capillary vessels by an even thinner barrier called [alveolar capillary membranes, type 2 alveolar cells, type 1 alveolar cells] . [alveolar capillary membranes, type 2 alveolar cells, type 1 alveolar cells] occur on the inside surface of the alveoli and secrete liquids called pulmonary surfactants, to help the surface of the alveoli expand.

Which of the following is a general adaptation of the respiratory system that increases the rate of diffusion?

a. Decreasing the concentration gradient across the respiratory surface

b. Having a small respiratory surface area

c. Having a thin respiratory surface

Describe the major processes of CO2 uptake by the blood in a systemic blood capillary.

1. Which of these cells is capable of phagocytosis? Red blood cells NK cells Mast cells Dendritic cells

2. Which of these chemicals aids in inducing apoptosis in a virally-infected cell? Histamine Eicosanoids Heparin Granzyme

3. Which of these cell types is capable of producing cytotoxic chemicals against a multicellular parasite? Dendritic cells Mast cells Eosinophils