Answer and Explanation:
1. Many butterflies are affected by the same parasites as humans. In this case, experiments that use and observe this type of animal are important because it can allow human beings to observe how these parasites act in contact with a living organism.
2. This stimulates the opening of new scientific thoughts that allow human beings to improve treatments and medications to combat these parasites when the human being is a victim.
Answer:The superficial transverse perineal muscle arises from the ischial ramus and is inserted into the perineal body. All three superficial muscles are supplied by the pudendal nerve. In the female, the bulbospongiosus is separated from the contralateral muscle by the vagina
Explanation:
Answer: d. angiotensin is detected by the hypothalamus.
Explanation:
Angiotensin is a hormone which causes the narrowing of the blood vessels. This helps in maintaining the blood pressure and also maintains the fluid balance in the body. The hormone acts on the brain. This hormone binds to the hypothalamus gland of the body, it stimulates the thirst and increases the demand for water intake. It also stimulates the release of antidiuretic hormone by the pituitary gland to increase the concentration of urine by preventing water loss.
Answer:
The blood pressure is directly proportional to the total length of the vessel.
Explanation:
The blood pressure is directly proportional to the total length of the vessel.
The long blood vessel will have higher the resistance and the flow of blood will be lower.
Thus, making intuitive sense, as with blood volume, as the vessel's enhanced surface area will impede blood flow. This lowering area will lead to the higher blood pressure through the blood vessel. Similarly with the reduction in the resistance of the blood vessel, the blood flow will boost.
Answer: 1. Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
2. Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.
3.Within the bone marrow, all blood cells originate from a single type of unspecialized cell called a stem cell. When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell.
4. Epinephrine and norepinephrine, hormones secreted by the adrenal medulla, raise blood pressure by increasing heart rate and the contractility of the heart muscles and by causing vasoconstriction of arteries and veins. These hormones are secreted as part of the fight‐or‐flight response.
