Histology Exam 3 Flashcards

Old exam questions/practice questions

which lymphoid organ normally becomes less functional with age?

thymus

Identify the structure in this photomicrograph

lymph node

Identify the letter that best corresponds to the area that is on or pointing two the periarteriolar sheath in the white pulp

B

The immune system organ that exhibits both an afferent and an efferent lymph vessel is the…

lymph node

What type of lymphoid tissue is NOT found in the dog

hemal nodes

open and closed circulation are present in the _____ and swollen RBCs are removed by the _____ of this organ during open circulation

spleen, macrophages

What is the function of the thymus

T-lymphocyte selection/differentiation

Which of the following statements about lymph nodes is INCORRECT

blood vessels enter at the periphery and exit at the medulla along with the lymph vessels

What cell type is primarily associated with the humoral immune response?

B-lymphocytes

A ‘primary lymph organ’ is referring to a lymphatic organ where:

lymphocytes are created, lymphocytes mature

The darker staining cells that surround the individual lymph nodules are…

mantle

The cells that can be predominantly be found in the later of dark cells surrounding the lymph nodule that the white arrow is pointing to have what FUNCTION

they are primarily inactive B-lymphocytes

Identify the CORRECT statement regarding tonsils

tonsils have no afferent vessels, only efferent vessels

What specific cell type do you find here taking up the black stain in the marginal zone of this lymphatic organ?

macrophages

What acidophilic staining feature at the tip of the white arrow

artery of the white pulp

Which of the following is NOT a function of the spleen

All of these are answers

The general term for the basophilic areas of tissue on this organ is the ____ pulp

white

In which location would you expect to find the distal convoluted tubules

A

Which location would you expect to find the papillary duct

C

where can you typically visualize the macula densa cells

near the vascular pole of the glomerulus

Which of the following conditions would NOT be expected to increase the amount of filtrate produced at a glomerulus?

vasoconstriction of the afferent arteriole

at what region of the nephron will you find the most water being re-absorbed

at the descending loop of Henle

The tubules shown here on both longitudinal and cross section are best described as…

collecting ducts

Which of these histological sections is an example of the loop of Henle where the descending loop curves back to become the ascending loop

B

the proximal convoluted tubules and proximal thick tubules of the nephron have specializations to increase surface area for re-absorption. What is the specialization?

they have a brush border

what is one unique feature of the ureters of the equine that most other species lack?

the equine glands in the wall of the ureters that make urine is cloudy and foamy

Identify the correct statement about the urinary bladder

the detrusor muscle is smooth muscle

what type of epithelium does the urinary bladder have

transitional

Identify the structure indicated by the yellow arrows

diffuse lymphoid tissue

identify the structure indicated by the double arrows

primary lymphoid nodule

identify the structure labeled by the double arrows

primary lymphoid nodule

identify the structure indicated by the double arrows

secondary lymphoid nodule

Identify the structure indicated by the double arrow

germinal center

identify the indicated histological structure/tissue

Peyer’s patches

identify the indicated histological structure/tissue

lymphoid nodules

identify the indicated histological structure/tissue

diffuse lymphoid tissue

Identify the organ

lymph node

Identify the structure indicated by the arrows

subscapular sinus

Identify the structure indicated by the arrows

trabecular sinuses

Identify the structure indicated by the arrows

medullary cords

identify the structure indicated by the arrows

medullary sinuses

identify the structure indicated by the arrows

capsule

identify the histological structure/tissue

lymphoid nodules

identify the indicated histological structure/tissue

white pulp

17 identify the indicated histological structure/tissue

red pulp

identify the indicated histological structure/tissue

PALS

identify the indicated histological structure/tissue

PALS

identify the indicated histological structure/tissue

splenic sinuses

identify the indicated histological structure/tissue

splenic cords (cords of Billroth)

identify this organ

thymus tissue

identify the structure indicated by the double arrow

Hassall’s corpuscles

identify the aggregate of lymphoid tissue

tonsil

identify the regions outlined in this image of a lymph node

paracortex