Lab Analysis
Iker Lopez
Anatomy & Physiology P2
Wednesday, September 19, 2012
Heart Rate Response to Baroreceptor Feedback Lab
Fundamental Question: Does the body respond to its environment?
Testable Question: When the body is in the squat position to normal while the time limit stays the same and how far you squat is the same, will the heart rate recover after returning to standing position in 10 seconds?
Hypothesis: If the body moves back to normal position from squatting position while the time limit and squat angle are all relevant in all three trials, then the heart rate will balance in 10 seconds because the baroreceptors will start the feedback mechanism and will quickly rebalance the heart rate?
Background:
The feedback mechanism is important to human physiology because if the body is not in balance or at homeostasis, it will not function correctly. Feedback mechanisms attempt to keep the human body in balance. For example, if the body temperature is too high, the feedback mechanism quickly reacts and makes the body sweat. The feedback mechanism contains receptors that sense the stimulus which goes to its rightful control system and the effectors react to the response. In "Human Physiology with Vernier", it explains how heart rate responds to the baroreceptors feedback. As the leg muscles become compressed, it causes a sudden increase in stroke volume (amount of blood pumped with each beat), and pressure which are sensed by the baroreceptors. 2 types of feeback mechanisms are positive and negative feedback mechanisms. The difference between the 2 is that positive feedback mechanisms move away from the setpoint or does not try to balance the human body. While negative feedback mechanisms work on trying to maintain homeostasis. The most prevalent mechanism in humans is the positive mechanisms since it is always doing something that will cause the heart rate to increase or decrease. Three determinants of blood pressure are Heart rate, Resistance, and Stroke
Anatomy & Physiology P2
Wednesday, September 19, 2012
Heart Rate Response to Baroreceptor Feedback Lab
Fundamental Question: Does the body respond to its environment?
Testable Question: When the body is in the squat position to normal while the time limit stays the same and how far you squat is the same, will the heart rate recover after returning to standing position in 10 seconds?
Hypothesis: If the body moves back to normal position from squatting position while the time limit and squat angle are all relevant in all three trials, then the heart rate will balance in 10 seconds because the baroreceptors will start the feedback mechanism and will quickly rebalance the heart rate?
Background:
The feedback mechanism is important to human physiology because if the body is not in balance or at homeostasis, it will not function correctly. Feedback mechanisms attempt to keep the human body in balance. For example, if the body temperature is too high, the feedback mechanism quickly reacts and makes the body sweat. The feedback mechanism contains receptors that sense the stimulus which goes to its rightful control system and the effectors react to the response. In "Human Physiology with Vernier", it explains how heart rate responds to the baroreceptors feedback. As the leg muscles become compressed, it causes a sudden increase in stroke volume (amount of blood pumped with each beat), and pressure which are sensed by the baroreceptors. 2 types of feeback mechanisms are positive and negative feedback mechanisms. The difference between the 2 is that positive feedback mechanisms move away from the setpoint or does not try to balance the human body. While negative feedback mechanisms work on trying to maintain homeostasis. The most prevalent mechanism in humans is the positive mechanisms since it is always doing something that will cause the heart rate to increase or decrease. Three determinants of blood pressure are Heart rate, Resistance, and Stroke