During organogenesis in vertebrates, some organs develop and becomefunctional sooner than others. Why is it important, for example, that theheart of a terrestrial vertebrate develop sooner than its lungs?

Q: trations of the flow of blodd from chambers of the heart to the mammary gland of a milking cow?.

A: As we know Blood is the key body fluid responsible for carrying nutrients and respiratory gases to…

Q: A woman gave birth to her baby at 26 weeks. Upon delivery, the doctor noticed that the baby showed…

A: Ans.1  Respiratory distress syndrome when there is not enough surfactant in the lung. Surfactant is…

Q: he unlabeled structure (marked by the red arrow), would in fetal life (A) transport deoxygenated…

A: The liver is defined as an organ that is present in the digestive system of the body and is present…

Q: Suppose an auto accident had fractured a pregnant woman’s sphenoid bone and severed the pituitary…

A: The skull base is a main and dynamic bone structure in the skull that serves as the base of the…

Q: Describe, in humans, what becomes of the six pairs of aortic arches typical of vertebrate embryos?

A: Introduction :- In the embryo aortic arches develop in association with each of the developing…

Q: HUMAN DEVELOPMENT What organs were produced at the start of development? Towards the end of…

A: Human development  allows the human beings to form specialised structures like organs during their…

Q: About 2 weeks after birth, a neonate began to vomit shortly after feeding. Each time, the vomitus…

A: Vomiting in neonates is common and most of the time it is insignificant or unimportant. Vomiting in…

Q: Fish, like all invertebrates have a single circulatory systems circulatory a) explain why single…

A: Single circulatory system : It occurs in fish . In this system blood travels from heart to gills ,…

Q: Which of the following animals demonstrate embryonic diapause? --whale --human --pig --platypus…

A: Embryonic diapause is a fascinating biological phenomenon watched in an assortment of creature…

Q: Three circulatory systems of vertebrates are represented in the following diagram. Identify to which…

A: Introduction :  The heart is an organ that pumps blood throughout the body, and arteries, veins, and…

Q: Which of the following is true of the circulatory system of a grasshopper? A. One or more muscular…

A: To obtain oxygen into the blood, the circulatory system (cardiovascular system) blood is pumped from…

Q: Humans have three openings in an analogous place. Why is there a difference in the number of…

A: Hello! Since you have posted multiple questions we are answering only one question here as per the…

Q: What germ layers make up the wall of the allantoic stal

A: A pig embryo is the early developmental stage of a pig while it is in the egg or within the uterus…

Q: The first breath of a newborn is sheer magic...so much changes with a single breath! Describe what…

A: When a baby is born, a large number of changes take place in the different organ systems. After the…

Q: Explain the benefit, in animals that breathe water, of contolling venilation based on blood levels…

A: To determine the benefit of animals that breathe water by controlling ventilation based on the blood…

Q: How has the developing frog embryo dissipated its metabolic wastes?

A: Introduction: The development of a frog embryo occurs through a process called embryo genesis. It…

Q: Suppose we would want to have mirrored lateral sides (meaning both the left and right portion are…

A: The majority of animals have bilateral symmetry. They have anterior-posterior (A-P) and the…

Q: What organs systems and organs are associated with the REPRODUCTION AND DEVELOPMENT?

A: The reproductive system of an organism, often known as the genital system, is the biological system…

Q: Describe the structure of the heart of a mammal

A: The heart is a hollow muscular organ that pumps the blood through the circulatory system by rhythmic…

Q: In a developing Chicken embryo, what is the fate of the postanal gut?

A: Postanal gut is the the extreme end of the alimentary canal.

Q: In 2011, 45% of pregnancies in the US were unintended ( Choose ] [ Choose ] Refined wheat flour is…

A: The appropriate matching is given below

Q: There are several hypotheses that explain why we age. Name one of these, and explain how it is…

A: Gerontology, the study of aging, could be a comparatively new science that has created unbelievable…

Q: Trace the flow of blood through a mammalian heart, naming the four chambers and their valves, and…

A: The heart is the most important organ in the body. It is made up of several different types of…

Q: The __________ arteries are the blood vessels of the heart, responsible for nutrient and O2…

A: According to the question, we have to explain and fill up the blanks as given above. So, let us have…

Q: The opening between the two atria is found in a placental mammal fetus is called the:

A: The heart is the most vital organ of the body in biological organisms that works continuously from…

Q: The mesoderm eventually turns into which of the following substances? O connective tissue gut lining…

A: During development time,The cells are arranged in gastrulation phase to make three germ layers such…

Q: What is Gynandromorph in biology?

A: Entomology is defined as the branch of zoology which is involved in the scientific study of insects…

Q: What organs were produced at the start of development? Towards the end of development

A: An embryo is formed from the zygote which is formed from the fusion between male and female gametes.…

Q: what evolutionary advantages does the amniotic egg have? explain how each component of the egg plays…

A: Allow embryos to grow faster and to a greater extent before hatching. Animals are no longer reliant…

Q: Explain why stem cells supplied are needed in some tissues of the adult mammal to maintain tissue…

A: Stem cells are the most initial cells that have the ability to differentiate and give rise to all…

Q: Your friend points out in anatomy class that by the end of the eight week, an embryo’s digits appear…

A: The initial two weeks of intrauterine development are known as the pre-embryonic stage. The…

Q: 11 of 20 Which of the following statements best explains why it is possible for human infants born…

A: Preterm is defined as babies born alive before 37 weeks of pregnancy are completed. They are said to…

Q: There is no mixing of oxygenated (high [O2]) and deoxygenated (low [O2]) blood in the ventricle of a…

A: The circulatory system, or the cardiovascular system, is an organ system that permits blood to…

Q: Early human embryos have both male and female reproductive tissues but, by the time they are born,…

A: The intermediate mesoderm is responsible for the development of the reproductive organs. The adult's…

Q: When both vitamin K and Hepatitis B is administered in a newborn immediately after delivery. What is…

A: Vitamin K is a crucial factor for the synthesis of coagulation factors. In newborns, vitamin K…

Q: Which organ system is found in both plant and animals?

A: The system which is common between plants and animals is the circulatory system. The circulatory…

Q: Compare and contrast the three types of mammals with respect to fetal development and birth: the…

A: Fetal development begins with implantation when the sperm fertilizes the egg. At this point, the…