F25 Homeostasis, A vs P, & Cancer

Which of the following BEST represents the flow of any homeostatic loop?

• receptor ---> efferent pathway ---> control center ---> afferent pathway ---> effector
• receptor ---> afferent pathway ---> control center ---> efferent pathway ---> effector
• effector ---> efferent pathway ---> control center ---> afferent pathway ---> receptor
• effector ----> afferent pathway ---> control center ---> efferent pathway ----> receptor
• Stimulus ---> efferent pathway ---> effector ---> control center --->afferent pathway ---> responder

Tags

NGSS.HS-LS1-3

The medulla oblongata of the brain stem regulates the heart rate. Which role of the feedback loop is this acting?

• Receptor
• Effector
• Control center
• Responder
• Afferent pathway

Tags

NGSS.HS-LS1-3

READ CAREFULLY AND COMPLETELY! Which of the following BEST describes positive feedback systems?

• They regulate heart and breathing rates.
• They operate in such a way that the initial stimulus is shut off or reduced.
• They regulate heart and breathing rates, and the initial stimulus is amplified.
• They regulate such things as blood clotting and fever, and the initial stimulus is reduced or decreased.
• They regulate such things as blood clotting and fever, and the initial stimulus is amplified.

Tags

NGSS.HS-LS1-3

A woman has been in the dilation phase of labor for about 2 hours. The contractions are not getting closer to each other, and the contractions are not intensifying. There is concern because her water had already broken, which is why she has come to the hospital. It is decided that she needs to be given a synthetic form of the hormone oxytocin (pitocin - commonly called “pit”) to get labor progressing. If this doesn’t work, a cesarean section is imminent. What type of feedback loop is malfunctioning in this situation?

• Positive feedback
• Negative feedback

Tags

NGSS.HS-LS1-3

Ketoacidosis is a serious condition that occurs when a diabetic’s blood sugar is too high for too long. Since, the blood sugar is high, but insulin is not present to uptake it in the cells, the liver begins to break down fats for energy. The cells are starved of glucose (sugar) they need. This results in ketones being created that decrease the pH level of the blood. It is potentially fatal if not corrected. What type of feedback loop is malfunctioning in this situation?

• Positive feedback
• Negative feedback

Tags

NGSS.HS-LS1-3

Which of the following represents a physiological study?

• Making a section through the heart to observe its interior.
• Examining the surface of a bone.
• Viewing muscle tissues using a microscope.
• Observing the parts of a reproducing cell.
• Studying how nerves conduct electrical impulses in the heart.

Tags

NGSS.HS-LS1-3

The science being exhibited when a student observes specialized cells on prepared slides using a microscope.

• Anatomy
• Physiology

Tags

NGSS.MS-LS1-1

Learning the abdominal quadrants and regions represents which type of science?

• Anatomy
• Physiology

The science exhibited when taking someone's blood pressure.

• Anatomy
• Physiology

Tags

NGSS.HS-LS1-3

The science that explores the physics of movement.

• Anatomy
• Physiology

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-3