Vasa Vasorum in Blood Vessels Quiz

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What is the thickness of the stratum corneum layer in the epidermis?

400-600 μm

Thin

Thick

75-150 μm (correct)

Which layer of the epidermis is absent in thin skin?

Stratum basale

Stratum lucidum (correct)

Stratum spinosum

Stratum granulosum

Which of the following is present in the dermis of thick skin but absent in thin skin?

Sebaceous glands

Sweat glands (correct)

Dermal papillae

Hair follicles

What is the primary difference in the muscularis externa layer between the gastrointestinal tract and the skin?

The gastrointestinal tract has an additional layer of longitudinal smooth muscle. Signup and view all the answers

What is the primary function of the submucosa layer in the gastrointestinal tract?

Contain the nerve plexus that controls muscle contractions. Signup and view all the answers

What is the main function of the muscularis mucosae layer in the gastrointestinal tract?

Allow for contraction and movement of the digestive tract. Signup and view all the answers

What type of blood vessels have more frequent vasa vasorum and why?

Arteries, due to being too thick for diffusion Signup and view all the answers

What are the main components of capillaries and post-capillary venules?

Endothelium, basal lamina, pericytes Signup and view all the answers

What is a specific difference between medium-sized veins and medium-sized arteries in terms of their walls?

Veins have a thicker tunica intima Signup and view all the answers

What is the main function of muscular walls in medium-sized arteries?

To control blood flow to different organs Signup and view all the answers

What is the role of smooth muscle in medium-sized arteries?

Control the blood supply through vasoconstriction and vasodilation Signup and view all the answers

In which type of blood vessel are valves present and why?

Veins, to prevent backflow of blood Signup and view all the answers

Which cells form the Periarterial lymphatic sheath (PALS) in the thymus?

T lymphocytes Signup and view all the answers

What is the main function of the spleen's red pulp?

Filtration of blood by macrophages Signup and view all the answers

Which type of epithelium covers the Pharyngeal Tonsils?

Pseudostratified columnar Signup and view all the answers

What is the term used for the enlargement of Pharyngeal Tonsils?

Hypertrophy Signup and view all the answers

Which type of epithelium covers the Lingual Tonsils?

Stratified squamous non-keratinized Signup and view all the answers

What can cause inflammation of Palatine Tonsils?

Presence of deep crypts Signup and view all the answers

What is the function of K cells in the respiratory epithelium?

Release hormones Signup and view all the answers

Which type of cells in the alveoli are responsible for synthesizing and secreting pulmonary surfactant?

Type II pneumocytes Signup and view all the answers

What is the main function of ciliated columnar cells in the respiratory epithelium?

Move dust & mucous particles Signup and view all the answers

Which cells differentiate into ciliated and goblet cells in the respiratory epithelium?

Basal cells Signup and view all the answers

What is the role of Type I pneumocytes in the alveoli?

Gas exchange Signup and view all the answers

What is the type of epithelium lining alveoli?

Simple squamous epithelium Signup and view all the answers

What is the function of vasopressin/antidiuretic hormone (ADH)?

Increases water permeability of renal collecting ducts Signup and view all the answers

Which cells in the thyroid gland secrete calcitonin?

Para-follicular cells Signup and view all the answers

What is the major function of oxytocin?

Stimulates contraction of mammary gland myoepithelial cells Signup and view all the answers