Provided below are the pressures in the left atrium, left ventricle, and aorta at a given point during the cardiac cycle of two different NORMAL patients. Based on the three pressures, what phase of the cardiac cycle are each of the two patients in?

Patient 1

Atrial pressure: 10 mmHg

Ventricular pressure: 75 mmHg

Aortic pressure: 85 mmHg

Patient 2

Atrial pressure: 15 mmHg

Ventricular pressure: 10 mmHg

Aortic pressure: 90 mmHg

A) Patient 1: Isovolumetric Contraction

Patient 2: Filling

B) Patient 1: Isovolumetric contraction

Patient 2: Ejection

C) Patient 1: Isovolumetric Relaxation

Patient 2: Ejection

D) Patient 1: Filling

Patient 2: Isovolumetric Contraction

E) Patient 1: Filling

Patient 2: Isovolumetric Relaxation

What 3 injuries might this predispose the athlete to suffer and why because of pes planus

the most frequently broken bone in the body is the

what is the most frequent broken bone in the body?

5. An athlete experiences a FOOSH mechanism and has radial side wrist pain. You suspect a scaphoid fracture - which fracture test would be ideal for this assessment prior to sending for x-rays?

2. The x-ray comes back negative but the athlete is still in a lot of pain. How will you manage the injury in the short term and why?

3. What is the risk if this injury isn’t managed properly? If misdiagnosed, what follow up care is required?  
4. What 3 other injuries might this athlete have suffered with the mechanism? Be specific about the structure and type of injury.

Sarah's doctor has detected late-stage malignant ovarian tumors. Which branch of the immune system would respond to these conditions?

A) cell-mediated immune response - Tc cells

B) cell-mediated immune response - B lymphocytes

C) macrophages

D) complement

A 50-year-old female presents to your office complaining of headaches, pain in her joints, and enlarged shoe, glove, and hat size. Physical examination is significant for a predominant jaw, increased soft-tissue in the palm and soul and a large tongue.

Laboratory workup is significant for hyperglycemia.

1. What lab tests would be ordered for this condition?

2. What treatments would be recommended for this patient?

3. If the patient would go untreated what would be the complications from this disorder or this condition?

Which of the three non-human organisms (rats, elephants, and dolphins) do you think would be best suited for research on mitochondrial disorders and their effect on ATP production? Explain your answer. (you can take a variety of factors into account.)

I Can’t Stop Coughing: A Case Study on the Respiratory System

Mike is sitting in his athletic training suite feeling sorry for himself. He moved from Southern California to play soccer at Northern Minnesota University (NMU) as a highly recruited player. All was well until he got sick with a miserable cold. He soon recovered, but now he finds himself with a lingering dry cough and difficulty catching his breath any time he exerts himself, which is every day! He also notices it has gotten worse as the weather has become colder. To make things worse, Mike feels, and looks, like he’s out of shape, so his coach has been criticizing him for dogging it.

A few days later, Mike relays his story to JP, the head athletic trainer at NMU. “I’m thinking my cold is coming back, or something else is wrong with me. When I’m just hanging out, like now, I feel fine. But as soon as I start to run I get winded and can’t stop coughing.” JP listens to Mike’s breathing sounds with his stethoscope, but hears nothing abnormal. So he tells Mike to come back as soon as the symptoms return during soccer practice. Twenty minutes later, Mike is back in the athletic training suite, audibly wheezing, coughing, and short of breath. The team physician, Dr. McInnis, happens to be there and performs a complete physical exam. He also does pulmonary function tests with Mike using spirometry, including a forced vital capacity (FVC) and forced expiratory volume in one second (FEV1). He instructs Mike to take a maximal inhalation and then exhale as forcefully and maximally as possible into the spirometer.

Based on his findings, Dr. McInnis tells Mike he thinks he is experiencing cold-induced bronchoconstriction (also called cold-induced asthma), which is made worse by exertion. The doctor explains to Mike that his recent upper respiratory infection probably inflamed his airways, making them hypersensitive and reactive to irritants, such as cold and physical exertion. When Mike exercises in the cold, autumn afternoons of Minnesota, his sensitive airways temporarily bronchoconstrict, causing the symptoms he is experiencing. Asthma is almost always a reversible condition. Dr. McInnis prescribes two puffs of an albuterol inhaler, to be used 10 minutes before a bout of exercise in the cold.

Short Answer Questions:

1) Describe the relationship between intrapulmonary pressure, atmospheric pressure, and air flow during normal inspiration and expiration, referring to Boyle’s law.

2) Resistance varies in Mike’s conducting airways. Using your understanding of respiratory anatomy, explain where in his airway the resistance is highest and why.

3) Several physical factors that influence the efficiency of pulmonary ventilation are compliance, alveolar surface tension, and airway resistance. Briefly describe each factor and identify the one that is affecting Mike’s efficiency of breathing.

4) What must happen to Mike’s intrapulmonary pressure in order for him to maintain normal air flow during inhalation and exhalation when he is having one of his asthma attacks?

5) How does Mike’s body make the necessary changes in intrapulmonary pressure to maintain normal air flow when he is experiencing cold-induced asthma?

6) When Mike is experiencing an asthmatic attack, his forced vital capacity (FVC) is 65%, and his FEV1 is 65%. Are these values normal? Knowing how one performs FVC tests, explain these test results in Mike’s case. (Assume that Mike and the doctor have performed an accurate test.)

7) Albuterol is a selective beta-2 adrenergic agonist, which means it specifically activates beta-2 adrenergic receptors on smooth muscle in the airways. How does this improve Mike’s asthma?

If the radius of a blood vessel decreases by 30% (1/3), how does it effect blood flow?