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Agata [3.3K]
3 years ago
10

Friction between membranes of the heart is reduced by:

Medicine
1 answer:
jasenka [17]3 years ago
3 0

Answer:

The correct option is : a. serous fluid in the pericardial cavity

Explanation:

The heart is enclosed in a sac containing the heart, known as the  pericardium. The pericardium has two layers- fibrous and serous layer.

The serous layer of the pericardium produces and secretes the pericardial fluid into the pericardial cavity.

The pericardial fluid is a lubricating serous fluid present in the pericardial cavity. It reduces the friction caused between the pericardial membranes by lubricating the epicardial surface.

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What is an example of personal protective equipment?
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Answer:

C

Explanation:

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2 years ago
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Healthcare disparities often link to social and economic disadvantages. What other type of disadvantage are healthcare dispariti
Len [333]
C - Mental disadvantages
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2 years ago
The coronary circulation receives its blood supply from vessels that arise from the:
NemiM [27]

Answer:

The correct answer will be option B-left atrium.

Explanation:

The coronary circulation is the circulation of blood and nutrients to the myocardium of the heart on both sides.

The coronary system consists of coronary arteries and coronary sinus(vein) in which coronary arteries arise from the main artery of the circulatory system called aorta. This aorta arises from the left atrium of the heart which supplies oxygenated blood. These coronary arteries divide into left and right arteries which supply oxygenated blood to the heart.

Thus, option B-left atrium is the correct answer.

6 0
3 years ago
a nurse is caring for an infant who has been prescribed a one-time dose of ceftriaxone (rocephin) 50 mg/kg im. the infant weighs
RideAnS [48]

The nurse should administer 0.8 mL ceftriaxone IM.

<h3>How to calculate the value?</h3>

Determine the infant's weight in kg: 2.2 lb / x kg

= weight in lb / 1 kg; 2.2 lb / x kg = 17.6 lb / 1 kg.

Cross multiply and x = 8 kg

Find total of one-time dose:

Amount prescribed x kg weight (mg x kg)

= total daily dose; 50 mg x 8 kg = 400 mg

What is the dose needed?

Dose needed = Desired; Desired = 400 mg

What is the dose available?

Dose available = Have; Have = 500 mg

Set up an equation using knowledge about basic equivalents.

Desired x Quantity / Have

= Amount to be given; 400 mg x 1 mL / 500 mg = x mL; 400 x 1

= 400 ÷ 500 = 0.8 mL

Learn more about nurse on:

brainly.com/question/6685374

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4 0
1 year ago
Discuss the different types of headaches, the possible causes of each, and how to distinguish a harmless headache from a potenti
Law Incorporation [45]

Answer:

A. One of the most common complaints you will hear from your patients in terms of pain is headache.

1. Headache can be a symptom of another condition or it can be a neurologic condition on its own.

2. Only a small percentage of headaches are caused by a serious medical condition.

3. Most headaches are harmless and do not require emergency medical care.

4. Sudden, severe headache, however, requires assessment and transport.

a. If more than one patient reports headache, consider carbon monoxide poisoning.

B. Tension headaches, migraines, and sinus headaches are the most common types.

1. These are not medical emergencies.

2. Tension headaches are the most common.

a. These headaches are caused by muscle contractions in the head and neck and are attributed to stress.

b. The pain is usually described as squeezing, dull, or as an ache.

C. Migraine headaches are the second most common type of headache.

1. They are thought to be caused by changes in the blood vessel size in the base of the brain.

2. The pain is usually described as pounding, throbbing, and pulsating.

3. Migraines are often associated with visual changes such as flashing lights or partial vision loss.

4. The patient will often have nausea and vomiting.

5. Migraine headaches can last for several days.

D. Sinus headaches are caused by pressure that is the result of fluid accumulation in the sinus cavities.

1. Patients may also have coldlike signs and symptoms of nasal congestion, cough, and fever.

2. Prehospital emergency care is not required.

E. Serious conditions that include headache as a symptom are hemorrhagic stroke, brain tumors, and

meningitis.

1. You should be concerned if the patient complains of a sudden-onset, severe headache or a sudden

headache that has associated symptoms.

2. You should suspect a stroke in patients with a severe headache, seizures, and AMS.

3. Your patient assessment should include asking the patient if he or she has experienced any recent  head trauma.

Explanation:

8 0
3 years ago
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