Class Notes (836,213)
Canada (509,690)
BIOL 1412 (89)
Lecture

BIOL1412 03 12 2014.docx

3 Pages
113 Views
Unlock Document

Department
Biological Sciences
Course
BIOL 1412
Professor
Paul Messing
Semester
Winter

Description
BIOL1412 03 12 2014 2) Formed Elements a.  Red Blood Cells (RBCs) (Fig. 17.2) i. functions: 1) transport ­ 2 on iron (Fe) of heme;2 on globin (Fig. 17.4) 2) buffer ­ globin binds to H+ reversibly 3) carbonic anhydrase (CA) ­ important in  transport in blood ii. Hemoglobin iii. Hb = 4 hemes + 4 globins (protein) iv. 1 iron (Fe)/heme ∴ 4 Fe/Hb v. broken down by macrophages into  heme  Fe removed + stored (liver, muscle, spleen)  from stores (or diet) ⇒ bone marrow makes heme ⇒ RBCs  non­iron portion ⇒ bilirubin ⇒ excreted in bile from liver  jaundice: excess bilirubin in blood because:  excess RBC breakdown; or  liver dysfunction (neonates ⇒ liver immature); or  blockage of bile secretion  globulin  converted to amino acid ­ recycled  Note: RBCs ⇒ no nuclei/mitochondria ⇒ anaerobic respiration  only b. White Blood Cells i. Granulocytes 1) Neutrophils  1st to enter infected area (Fig. 17.10) 2) Eosinophils  attack parasites  breakdown chemicals released in allergic reactions 3) Basophils  secrete histamine (increase inflammation)  secrete heparin (inhibits local clotting) ii. Agranulocytes 1) Monocytes  enter tissues, enlarge to become phagocytic macrophages 2) Lymphocytes  T­lymphocytes ­ Helper T H) + Cytotoxic T (CTLs) Lymphocytes  B­lymphocytes ­ when activated, give rise to plasma cells ­ secrete antibodies  Natural Killer Cells ­ attack foreign cells, abnormal cells (non­specific) 3) Platelets (Fig. 17..12)  cell fragments fro
More Less

Related notes for BIOL 1412

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit