1) What are the major lymphatic organs/vessels?
2) Briefly describe how you would have performed the heart dissection as if you were to do it in class. What are the major structures you can see?
In: Anatomy and Physiology
In a qualification test for the swimming world finals, the
following data is recorded for a swimmer. In resting condition:
heart rate (HR) of 60 beats / min, a stroke volume (VS) of 85 mL /
min. During maximum effort in a test race on a slope: HR of 170
beats / min and a VS of 135 mL / beats. This swimmer weighs 68 kg
and measures 178 cm.
a) Calculate cardiac output (CO)
b) Calculate the body surface area according to the Dubois-Dubois
equation
c) Calculate the cardiac index for the swimmer
d) This athlete has been diagnosed with attention deficit
hyperactivity disorder ADHD, and in her case the sympathetic
nervous system is very active. Briefly explain how this influences
the Starling effect and stroke volume.
In: Anatomy and Physiology
After the high school group finishes their tour, Dr. Wayne sees two patients. Jeff Slater is a biochemist working for a biowarefare lab at the CDC. He is currently working on a project to develop a new neurotoxin and is using sarin as a model substance. Suddenly while working the lab alarms go off and Jeff accidentally knocks a vial of sarin over and a bit of the liquid splashes onto his arm between his gloves and lab coat. He suddenly starts to feel dizzy, his heart starts pounding harder than ever, and he has shortness of breath. He feels incredibly sluggish and tries to get to the exit. As he approaches the lab door, his muscles cramp up and he falls down and hits his head, knocking him unconscious. His colleague from across the hall happens to see him fall and calls for help. Jeff is given oxygen and taken to the nearby hospital, which happens to have a neuromuscular specialist. The sounding of the alarm turns out to have been just routine testing of a new system.
1. Dr. Wayne looks over the results and finds that the acetylcholinesterase activity is lower than normal. The normal range is 100% and Jeff's range is 44%. Dr. Wayne knows from Jeff ’s colleague that he is a bioweapons biochemist. Dr. Wayne figures out that Jeff has been working on synthesizing a new sarin-like biochemical weapon and suspects Jeff has a type of poisoning that is similar to that of sarin. What is the mechanism of action of sarin or a sarin-like chemical? How would exposure to a sarin-like poison affect the amount of sodium going into the muscle cell? What needs to happen to Jeff's post-synaptic membrane to remedy his paralysis. Physiologically what do we need more of and where?
In: Anatomy and Physiology
Q1Which muscle(s) is involved in forced
exhalation.??
Q2True or False: Air will flow into the lungs when the
intrapulmonary pressure is greater than atmospheric pressure.
questions3 As a general rule, vital capacity with. height and .with
age.
.Q4 Which period of pulmonary ventilation is a passive process?
In: Anatomy and Physiology
Name and explain the two hormones used for water and salt balance.
In: Anatomy and Physiology
What are the stress hormones? How do they act? Specifically, how does stress affect growth and development?
In: Anatomy and Physiology
1. What is an acrosomal reaction after egg and sperm first contact? What molecular interaction activates the acrosomal reaction? What is the purpose of acrosomal reaction?
2. What proteins on sperm tether the sperm to egg vitelline envelope? What would the consequence if this protein loses its specificity? (20 points)
3. What is polyspermy? What is the consequence of polyspermy?
4. What is the mechanism for fast block to polyspermy? What would be the influence on fertilization if the sodium concentration in the environment where fertilization occurs is too low?
In: Anatomy and Physiology
1) What are the accessory structures of the eye?
2) List the structures that are in each layer of the intrinsic eye.
3) List the pathway for vision.
In: Anatomy and Physiology
Describe the impact that the exercise pressor reflex and autoregulation have on cardiac output and skeletal muscle blood flow during exercise.
In: Anatomy and Physiology
Unfortunately, we now plagued with COVID-19, a disease that is caused by a novel Coronavirus (aka Severe acute respiratory syndrome, SARS-CoV-2). However, there is a significant percentage of those infected with the virus who show mild to no symptoms. On the other hand, others die from the disease complications in a short period of time.
Why is there such a contrasting effect on our human population?
If another cycle or season of the corona virus appears, what are your expectations of the outcomes?
In: Anatomy and Physiology
Case Study 1
Sample A is from a 35 year old male who visited his GP complaining of chest pain during exercise. An ECG taken at rest was normal but ischaemic changes developed on exercise. A family history revealed that his father died of a heart attack at the age of 45 years. The laboratory test results for his fasting blood sample were as follows:
Analyte Patient values Reference range for fasting
blood sample
Sodium 139 135-145 mmol/L
Potassium 4.1 3.0-5.0 mmol/L
Total protein 69 65-80 g/L
Albumin 35 35-47 g/L
Calcium 9.3 9.0-10.5 mg/dl
Lactate dehydrogenase 250 90-190 IU/L
Creatine kinase 129 30-60 IU/L
Asparatate transaminase 70 < 40 IU/L
Gamma glutamyl transferase 30 < 50 IU/L
Total Bilirubin 13 0.4-15 μmol/L
Glucose 12 3.5-5.5 mmol/L
Fructosamine 351 205-285 μmol/L
Cholesterol
Total 7.2 <5.2mmol/L
HDL 1.4 >1.5 mmol/L
LDL ? <3.5 mmol/L
Triglycerides 2.95 <1.7mmol/L
On the gradient gel electrophoresis, plasma sample for this patient showed the presence of small dense LDL particle.
In: Anatomy and Physiology
Describe the process of the folding of the neural plate to form the neural tube. 500 words max. Anatomy
In: Anatomy and Physiology
2. Jolene wakes suddenly to her alarm clock and realizes that she is late for her 9:15am CBIO2210 class. She jumps to her feet, feels dizzy and lightheaded for a moment, then hops into the shower. Draw a diagram / flowchart / picture of the sequence of events that occurred when she jumped up that overcame her dizzy feeling and prevented her from losing consciousness. Include the receptors, the control center, at least one effector site, information traveling between receptors / control center / effectors, and the response.
In: Anatomy and Physiology
In: Anatomy and Physiology
During exercise, the cardiopulmonary system plays a role in acid-base balance by _.
A increasing the ph of blood by hypoventilation
B lowrering ph of blood by hypervetialting
C removing H+ from blood by using bicarbonate system
D aisinf kidney in removal of lactic acid
D
In: Anatomy and Physiology