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jeka57 [31]
3 years ago
13

Systolic blood pressure:_____________ a) is the higher number of a blood pressure reading. b) is the lower number of a blood pre

ssure reading. c) is recorded when the left ventricle contracts. d) is the pressure in the smallest capillaries of the circulatory system.
Biology
1 answer:
Alik [6]3 years ago
6 0

Answer:

is the higher number of a blood pressure reading.

Explanation: systolic blood pressure is the higher number of a blood pressure reading and its measure in millimeter of mercury.

Systolic pressure is the amount of pressure in the arteries when contraction takes place in heart. Diastolic pressure is the pressure the heart when it relaxes. It is the lower number of blood pressure reading

When the systolic pressure is >120mm Hg and diastolic is less than 80mm Hg it is normal

120-129mm Hg and diastolic less than 80mm Hg it high and such person needs a regular medical check up

But when systolic 129-139 mmHg

and diastolic is 90mm Hg or above it means the individual is having hypertension stage 1

Above 140mm Hg is hypertension stage 2 and it is the most severe stage. It means the person is hypertensive and medical attention needs to be seek for necessary treatment as this could lead to death of such individual if not well managed.

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The long bundle of neurons that carries messages to and from the body to the brain and is responsible for very fast, lifesaving
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The long bundle of neurons that carries messages to and from the body to the brain and is responsible for very fast, lifesaving reflexes is called the<u> spinal cord. </u>

<h3>What is the espinal cord?</h3>

There are two organs involved in the central nervous system that function as control centers,

  • The brain,
  • The spinal cord.

The spinal cord is a nerve tube placed in a hollow space left between vertebras along the vertebral column. The vertebrae's body protects the spinal cord.

It is made of nerves that take orders from the brain to the rest of the body and send messages from the body to the brain.  

Reflexes acts are produced in the medulla, and the brain is not involved.

The nervous cells of the medulla have fibers that extend from the medulla to the body and are connected to sensory receptors.

When receptors receive stimuli, they send information to the nerve fibers, which take it to the brain. From the brain, they send a response.

The answer is spinal cord.

You can learn ore about the spinal cord at

brainly.com/question/6957362

brainly.com/question/15707666

6 0
2 years ago
Which layer of the epidermis has a high mitotic rate
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7 0
3 years ago
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(a) (1) State similar characteristics between the sea teak leaf and the weeping willow leaf
m_a_m_a [10]

1. Answer:

Both these leaves are quite similar because of their physical appearance. <em>The sea teak leaf and weeping willow leaf are narrow and elongated. However, a weeping willow leaf has tapered edges. </em>

The scientific names of sea teak and weeping willow plants are Podocarpus polystachyus and Salix babylonica.

  • The leaves of both these plants are simple regardless of their receptive compound appearance. This is due to the presence of complex vein structure on the leaf.

2. Answer:

<u>There many differences between sea teak leaf and weeping willow leaf.</u>

Sea teak leaf is 3-10 cm long while weeping willow leaf is only 6 cm long.  

Sea teak leaves are bright green and shiny while weeping willow leaves are green at top and white at the bottom.

<em>The bark of weeping willow can be used to obtain various medicines. Meanwhile, the leaves of sea teak plants are chewed to ease pain of joints. </em>

<u>Weeping willow trees are found in areas of China, South-West Asia and Europe. </u>

<u>Sea Teak trees are found in Indonesia, Malaysia etc.</u>

4 0
3 years ago
A father produces sperm that only carry ‘t’ alleles. What is likely to be his genotype?
Sav [38]

Answer:

The Genotype of an organism determines the genetic characteristics of an individual.

If a father produces sperm that carry only 't' alleles, the his genotype will be 'tt' or hom.ozygous genotype.

Hom.ozygous genotype contains the same type of genes responsible for a particular phenotype.

Hence, the correct answer is 'tt' or hom.ozygous genotype.

8 0
3 years ago
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