Connective Tissues: Types and Functions

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What is the main function of areolar connective tissues?

Transporting oxygen throughout the body

Producing red blood cells

Contracting and relaxing muscles

Binding and supporting different tissues (correct)

Which type of connective tissue is characterized by closely packed collagen fibers and few cells?

Supportive connective tissues

Reticular connective tissues

Dense connective tissues (correct)

Fluid connective tissues

Where are reticular connective tissues commonly found?

In tendons that connect muscles to bones

Beneath the skin around blood vessels

In ligaments that connect bones to other bones

Supporting soft organs like the spleen and lymph nodes (correct)

What is the role of macrophages in loose connective tissues?

Aiding in immune responses Signup and view all the answers

Which type of connective tissue has a watery matrix and is less flexible than loose connective tissues?

Fluid connective tissues Signup and view all the answers

What structures are primarily supported by dense connective tissues?

Tendons and ligaments Signup and view all the answers

Where does carbon dioxide exit out of the leaf cells?

Through stomata Signup and view all the answers

What is the purpose of lenticels in woody stems?

To allow oxygen diffusion into intercellular spaces Signup and view all the answers

How do birds ventilate their lungs?

By using a system of air sacs as blowers Signup and view all the answers

Which part of the plant has root hairs that increase surface absorptive capacity?

Roots Signup and view all the answers

Which part of the brain controls breathing in vertebrates?

Medulla oblongata Signup and view all the answers

In plants, where does gas exchange occur in non-woody plants?

Stomata in stems Signup and view all the answers

What is the function of the layer of waterproof cork tissue in woody stems?

Prevent water loss Signup and view all the answers

What is the role of the epiglottis during breathing?

Preventing food from entering the windpipe Signup and view all the answers

How do amphibians ventilate their lungs?

Positive pressure breathing Signup and view all the answers

Why is it important for animals to have a circulatory system?

To exchange essential gases Signup and view all the answers

What is the function of the trachea in the respiratory system?

To connect the larynx to the lungs Signup and view all the answers

How do mammals, including humans, ventilate their lungs?

By negative pressure breathing Signup and view all the answers

What is the function of arteries in the circulatory system?

Move blood away from the heart Signup and view all the answers

What is the main structural difference between arterioles and capillaries?

Size Signup and view all the answers

How do capillaries facilitate the exchange of substances between blood and body cells?

By diffusion through one-cell thick walls Signup and view all the answers

Why does blood flow more slowly in veins compared to arteries?

Veins do not receive pressure from the heart Signup and view all the answers

What is the role of valves in veins?

Prevent backflow of blood Signup and view all the answers

What is the purpose of the elastic structure in arteries?

Allow for expansion under high pressure Signup and view all the answers

What is the main goal of pulmonary circulation?

To carry oxygen-poor blood to the lungs and oxygen-rich blood back to the heart Signup and view all the answers

Where does systemic circulation transport blood in the body?

To all cells of the organs in the body Signup and view all the answers

In which loop of circulation does the blood travel to the lungs for oxygenation?

Pulmonary circulation Signup and view all the answers

What is the overall pattern of blood flow inside the body described as?

'8' shaped Signup and view all the answers

What role does oxygenation play in pulmonary circulation?

Increasing oxygen levels in the blood Signup and view all the answers

Who conducted an experiment in the 17th century involving a tree trunk and discovered a sweet-tasting fluid?

Marcello Malphigi Signup and view all the answers