Answer:
The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.
Explanation:
In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.
Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.
Answer:Luteinizing Hormone
Explanation:Luteinizing Hormone (LH) is a gonadotropin synthesized and secreted by the anterior pituitary gland in response to GnRH. Like FSH, LH is involved in reproductive processes in both males and females. When follicle maturation is complete, an LH surge triggers ovulation.
<u>ANSWER:</u>
The correct order is- Zygote, Blastula, Gastrula, Fetus.
<u>EXPLANATION:</u>
- The embryo develops from the zygote which is formed when the gametes fuse in the process of "fertilization".
- The zygote undergoes cell division to form blastula which is a "ball of cells".
- Gastrula leads to the rearrangement of cells of the blastula into three layers that differentiate into different systems of organ.
- The last stage is the fetus which then develops into a baby.
Answer:
3
Explanation:
Daily Recomendation
Children
2-3 years old ---2 cups
4-8 years old ---2½ cups
Girls
9-13 years old ---3 cups
14-18 years old ---3 cups
Boys
9-13 years old ---3 cups
14-18 years old ---3 cups
Women
19-30 years ---3 cups
31-50 years old ---3 cups
51+ years old ---3 cups
Men
19-30 years old ---3 cups
31-50 years old ---3 cups
51+ old years old ---3 cups
Cup Equivalents for Milk and Milk Products:
1 cup of milk, yogurt, or soymilk— gives 1 cup equivalent
1.5 ounces of natural cheese— gives 1 cup equivalent
2 ounces of processed cheese— gives 1 cup equivalent
Answer: Oxygen and glucose are both reactants in the process of cellular respiration
Explanation: hope this helps!
