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devlian [24]
2 years ago
10

Penguins, which are birds, and seals, which are mammals, do not share a common ancestors, but both have flippers adapted for swi

mming. Which of the following best describes the flippers of penguins and seals?
Penguins and seals are a result of divergent evolution with vestigial structures.
Penguins and seals are a result of divergent evolution with homologous structures.
The flippers of penguins and seals are analogous structures with similar functions but different ancestors.
The flippers of penguins and seals are homologous structures with similar functions and ancestors.
Biology
1 answer:
dem82 [27]2 years ago
6 0

Answer:

The flippers of penguins and seals are analogous structures with similar functions but different ancestors.

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when measuring the blood pressure, the cuff is deflated until two consecutive beats are heard through the stethoscope. This meas
dem82 [27]

Answer: Systolic pressure.

Explanation:

Every time the heart beats, it pumps blood into the arteries, which are vessels through which blood circulates from your heart to your tissues with the oxygen and nutrients they need. Blood pressure is the force of the blood pushing against the walls of the arteries, and is highest when the heart beats, pumping blood, which is measured as systolic pressure (i.e., when the heart contracts). On the other hand, diastolic blood pressure refers to the pressure of blood in the artery when the heart relaxes between beats (i.e., when the heart relaxes). Since there are two types of pressures, blood pressure readings are given in two numbers, with the top number being the systolic pressure and the bottom number being the diastolic pressure.  

For example, if the systolic pressure measured in a person is 125 millimeters of mercury (mm Hg) and the diastolic pressure is 85 mm Hg, the blood pressure is recorded as 125/85.  

So, <u>the systolic blood pressure is registered with the stethoscope when the cuff is deflated.</u> When two heartbeats are heard, the pressure gauge reading is recorded. <u>When the heartbeat ceases, the cuff pressure is released and the diastolic pressure is measured at this time.</u>

4 0
3 years ago
Liquid water is heated until it boils and becomes water gas. Which statement is true about the water?
Svetach [21]
That then right after heat it evaporates and then the water that is still in the bowl lowers because of the heat that sends out water molecules that just disappear. :)
8 0
3 years ago
The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae b
sashaice [31]

Answer:

False

Explanation:

The papillary muscles of both right and left ventricles began to contract shortly before the other ventricular muscles (systole) so that they can take up the slack on the chordae tendineae as the full force of ventricular contractions sends blood against the atrioventricular (AV) valve flaps.

They prevent the backward flow of blood to atria from ventricles. So if they contract after the ventricle systole they would not be able to perform their job.

8 0
3 years ago
How to explainn volume to a 10 year od
marusya05 [52]
Show them a glass of water. 
<span>tell them that the water is obviously in 3d because its not flat. Because this water takes up space in this glass it has a volume </span>

<span>Say anything that's 3d has a volume, even a 3d movie possibly. I know SPY KIDS 3 came out and some of the characters or things would jump off the screen. Since they aren't flat like a normal tv they have a volume</span>
4 0
2 years ago
Read 2 more answers
"The Introduction section of a scientific research article provides detailed information regarding the experimental design of th
Arisa [49]

Answer:

False

Explanation:

  • The "Introduction" section of a research article contains the detailed background information on the topic and the problem that is being answered by the research.
  • Experimental design as well as materials and methods are mentioned in the "Materials and Methods" section of a research article.
7 0
2 years ago
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