1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
egoroff_w [7]
4 years ago
14

Which cells activate the immune system when foreign substances appear in the body?

Health
1 answer:
9966 [12]4 years ago
7 0
Lymphocytes react to foreign intruders in the body. They are a type of white blood cell. I hope this helps! :)
You might be interested in
What is the difference between myocardial infarction (MI) and cardiac arrest?
Nuetrik [128]
According to Heart, cardiac arrest is when heart suddenly stop beating instantly but a myocardial infarction is when a heart muscle lacking from blood supply such as oxygen and cell this cause a heart attack.
6 0
3 years ago
Which of the following assessments is commonly used in exercise physiology laboratories to measure body fat composition?
Natali [406]

Answer:

d. Hydrostatic weighing

Explanation:

Body fat percentage is the most reliable indicator for establishing the ideal weight of a person, but it is also the most difficult to measure. Generally, a man with more than 25% body fat is considered obese. The percentage is increased to 30% in the case of women.

There are different formulas to calculate the percentage of body fat, but unlike other methods such as BMI or waist circumference, which can be calculated easily, this percentage is difficult to measure accurately. For this, different solutions can be used:

One of them, <u>hydrostatic weighing</u>, consists in weighing the person under water, although this technique is complex and can only be carried out by laboratories that have the necessary equipment.

7 0
3 years ago
If a schoolyard is kept open for public play, what is most likely to happen
evablogger [386]
Someone could get kidnapped.
8 0
3 years ago
Read 2 more answers
Which theory is described in this scenario? Kindergartener Janie has been practicing her letters and wants to learn how to read
Wewaii [24]

Answer:

Vygoysky's i think

Explanation:

7 0
3 years ago
Which is a case of drug abuse
andrey2020 [161]
If it is multiple choice, seeing the choices would be easier.
Using any drug for more than prescribed by a doctor is considered drug abuse.
3 0
4 years ago
Other questions:
  • What is the main cause of std
    12·1 answer
  • Describe two activities of moderate or vigorous intensity level that you participate in, with each activity focusing on differen
    8·1 answer
  • The fitness test for aerobic endurance is the PACER.<br><br> true or false
    15·2 answers
  • What is The Controlled Substances Act
    15·2 answers
  • rita gave birth to a baby. she does not wish for another baby soon. what will the doctors prescribe her?
    7·1 answer
  • Which type of mental health professionals help people with mental disorders in the families except and adjust to an illness?
    12·2 answers
  • Why is comparing your data important for your training sessions?
    7·2 answers
  • Which if these should be reportable dieases to protect public health
    13·2 answers
  • How often does a 16-year-old need a medical evaluation from a doctor?
    8·2 answers
  • When looking at the ear, there is a dark opening that leads into the head. What is the dark opening called?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!