The giant protein titin extends through the thick filaments and attaches to the Z disk.

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#Id: 10286

#Unit 4. Cell Communication and Cell Signaling

T cells initiate the adaptive immune response by interacting MHC on antigen-presenting cells that have been exposed to pathogens. 

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#Id: 5828

#Unit 7. System Physiology – Animal

Conn syndrome (primary hyperaldosteronism) caused by an aldosterone-secreting tumor.

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#Id: 4740

#Unit 5. Developmental Biology

The founder cell (AB) divides equatorially, while the P1 cell divides meridionally (transversely) to produce another founder cell (EMS) and a posterior stem cell (P2).

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#Id: 1262

#Unit 7. System Physiology – Animal

The adrenal cortex secretes three classes of steroid hormones:

Glucocorticoids

Mineralocorticoids

Androgens

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#Id: 1190

#Unit 7. System Physiology – Animal

A lesion in one optic tract causes blindness in half of the visual field