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3 years ago

What is phagocytosis?

Biology

1 answer:

snow_tiger [21]3 years ago

4 0

Answer:

B. The process of white blood cells breaking down pathogens

Explanation:

Please correct me if I'm wrong

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10. Social institutions are _ of the socialization process???. a. agents b. targets c. casualties d. opponents

zlopas [31]

Answer:

A) Agents

Hope that helped! I wasn't 100% sure but I hope this is right. If it's wrong, please tell me! Have a good day!

4 0

2 years ago

What was Antarctica's climate like millions of years ago?

dmitriy555 [2]

Subtropical climate with summer highs near 77F and winters near 50F. They found fossils of palm trees on the shores but inland there were conifers& beech trees. The Antarctica circumpolar current took shape millions on years later resulting in polar climates.

4 0

3 years ago

Analyze the relationships between the anatomical structures and physiological functions of the muscular system by matching the t

Afina-wow [57]

Answer:

a. Endomysium 8. The layer of connective tissue that surrounds an individual muscle fiber

b. Epimysium 6. The layer of connective tissue that surrounds a skeletal muscle

c. Fascia 3. Connective tissue located between adjacent muscles

d. Fascicle 12. A small bundle of muscle fibers within a muscle

e. Myosin 11. Protein found within a thick filament

f. Perimysium 4. The layer of connective tissue that separates a muscle into small bundles

g. Sarcolemma 5. The plasma membrane of a muscle fiber

h. Sarcomere 7. Unit of alternating light and dark striations between discs (lines)

i. Sarcoplasm 2. The cytoplasm of a muscle fiber

j. Sarcoplasmic reticulum 9. A cellular organelle in muscle fiber corresponding to the endoplasmic

k. Tendon 10. The cordlike part that attaches a muscle to a bone

l. Transverse (T) tubule reticulum 1. Membranous channel extending inward from muscle fiber membrane

Explanation:

A muscle has around it epimysium, which is connective tissue. Inside the epimysium, there are fascicles, and around each of them, there is perimysium. Inside every fascicle, there are muscle fibers, each of them is surrounded by a connective tissue called endomysium. Between every muscle, there is also connective tissue and is called fascia. The connective tissue has vessels and provides support.

The muscle cells are called fibers. They have a membrane, the sarcolemma, a cytoplasm, the sarcoplasm, and a sarcomere, which is the functional unit of the fiber, in other words, it is the structure responsible for the contraction. The sarcomere has different bands made of thick filaments of myosin and thin filaments of actin. They are the light and dark striations that go from disc z to disc z when we observe the sarcomere under a special microscope. The sarcoplasmic reticulum is the place that stores the calcium necessary for the contraction of the fiber, and the transverse tubule reticulum allows the contraction of various fibers since they spread the action potential amongst fibers.

7 0

3 years ago

Why must an organism maintain homeostasis

MaRussiya [10]

Homeostasis is the process through which an organism maintains certain internal conditions, such as a human body's internal mechanisms maintaining body temperature at a specific level to prevent over or under heating; this process is important because it makes it possible for cells and organs to function properly. For example, certain parts of the human body cease to function if they become too hot or too cold; this is why it is possible for people to freeze to death or die from overheating.

that is why it is important to maintain hemeostasis

6 0

3 years ago

Read 2 more answers

Which nutrient supplies the medium in which chemical changes in the body occur?

Marta_Voda [28]

Water (H2O) creates the medium in which chemical changes in the body occur.

5 0

4 years ago