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1 year ago

State the differences in compositionof blood between the aorta and main vein

2 answers:

7 0

The main difference between aorta and vena cava is that aorta carries oxygenated blood whereas vena cava carries deoxygenated blood. Aorta is the main artery that leaves the heart through the left ventricle. It supplies oxygenated blood throughout the body.

Ad libitum [116K]1 year ago

3 0

Answer:

The placenta is a unique vascular organ that receives blood supplies from both the maternal and the fetal systems and thus has two separate circulatory systems for blood: (1) the maternal-placental (uteroplacental) blood circulation, and (2) the fetal-placental (fetoplacental) blood circulation. The uteroplacental circulation starts with the maternal blood flow into the intervillous space through decidual spiral arteries. Exchange of oxygen and nutrients take place as the maternal blood flows around terminal villi in the intervillous space. The in-flowing maternal arterial blood pushes deoxygenated blood into the endometrial and then uterine veins back to the maternal circulation. The fetal-placental circulation allows the umbilical arteries

Explanation:

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Which of these is a provisioning service - a benefit that is obtained directly from the environment

nydimaria [60]

Answer:D

Explanation:

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2 years ago

If a person requires greater return when risk increases, thatb person is said to be

Mila [183]

If a person requires greater return when risk increases, that person is said to be:

risk averse

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2 years ago

EXPERT HELP I'LL GIVE BRAINLIEST: TWO statements

docker41 [41]

Answer:

B and D

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2 years ago

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Examine a two-gene cross that follows simple Mendelian inheritance of freckles and eyebrow shape between a woman with genotype M

Brilliant_brown [7]

Answer:

Explanation:

First, let us look at the result of crossing the two genotypes Mmpp and mmpp.

Mmpp will give the gametes Mp, Mp, mp, and mp

mmpp will give the gametes mp, mp, mp, and mp

The two sets of gametes can thus be lined up on both axis of the Punnet's square as shown in the attached image.

Genotypes of the offspring: 8 Mmpp and 8 mmpp

Since the two genes follow simple Mendelian inheritance pattern, the 2 genotypes automatically equates to 2 phenotypes in the ratio 1:1.

Hence, the correct option is b.

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2 years ago

Which characteristic defines all dichotomous keys?

vova2212 [387]

Answer:

c. Each key is organized as a flowchart.

Explanation:

A dichotomous key is a device that enables users to recognise natural world objects, such as wildflowers, trees, reptiles, mammals, fish and rocks. it used for the Identification whereby groups of species are frequently divided into two categories with increasing sequential division, more information on the basic characteristics of a particular organism is released.

Dichotomous keys are represented in two ways including either as descriptive representation in which a series of paired statements arraged in a numbered sequence or as a branching flowchart (diagrammatic representation) .

Hence, the correct option is c.

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2 years ago

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