Lymphatic & Endocrine System Flashcards
Name Cells of the lymphatic system
APC such as dendritic cells, macrophages, & B cells. Stromal cells such as reticular cells, & epithelial reticular cells
Primary Lymphatic organs
- bone marrow
- cloacal bursa (birds)
- Thymus (cortex & medulla)
Where do arteries enter the thymus?
corticomedullary junction
Name the only lymphatic organ with both afferent & efferent lymph vessels & sinuses containing lymph
Lymph Nodes
What is found in the paracortex of the lymph node?
T-Cells
Spleen functions
- filters blood
- recovers & stores iron
samples/removes antigens from blood - Hematopoiesis in fetus, sometimes in adult
- Stores RBC & platelets (horses, dogs cattle)
- Mounts immune responses against blood-borne antigens (B & T cells)
Do cats have a storage-type spleen?
No. Cats spleen does’t store RBC & platelets.
Function of red pulp in spleen vs white pulp
Red pulp- RBC storage
White pulp- lymphocytes, where immune response occurs
No lymphatic vessels in which parts of the body?
eye cartilage bone or bone marrow spleen CNS
Name the primary Endocrine Organs
- Pituitary/Hypophysis
- Pineal Gland/Epiphysis
- Thyroid gland
- Parathyroid
- Adrenal
What is the function of the thyroid gland?
Controls Calcium & produces parathyroid hormone (PTH)
What is the function of the pineal gland/epiphysis?
produces melatonin
Function of the adrenal gland
Located at the top of each kidney, the adrenal glands produce hormones that help the body control blood sugar, burn protein and fat, react to stressors like a major illness or injury, and regulate blood pressure. Two of the most important adrenal hormones are cortisol and aldosterone.
Explain Autocrine signaling vs paracrine
Autocrine mode of hormone action to which hormons bind to receptors on to the cell and affects the cell that produces it. Paracrine: describes hormone action where hormones are released from cells and bind to receptor on nearby cells and affects their function
