BIOS251-EXAM 3(WEEK 6-SKELETAL SYSTEM) QUESTIONS WITH CORRECT ANSWERS 2026

BIOS251-EXAM 3(WEEK 6-SKELETAL jk jk




SYSTEM) QUESTIONS WITH CORRECT jk jk jk




ANSWERS 2025 jk jk


major jk functions jkof jk the jkskeletal jk system jk- jk CORRECT jk ANSWER jk -1. jk blood jk formation
2. support

3. protection

4. movement

5. storage jk and jk release jkof jkminerals

6. store jktriglycerides



blood jkformation jk- jkCORRECT jkANSWER jk--
blood jk formed jk in jk RBM jk found jk in jk epiphysis jk of jk long jk bones, jk bones jk of jk axial jk skeleton, jk bones jk of jk pelvis



support jk - jk CORRECT jk ANSWER jk -- jk provides jk structural jk support jk for jkthe jk body

- serves jk as jk an jkattachment jkpoint jk for jk the jk tendons jkof jkskeletal jkmuscles



protection jk - jk CORRECT jk ANSWER jk -- jkthe jkskull jk bones jk surround jk& jk protects jkthe jk brain

- the jk vertebral jkcolumn jk surrounds jk & jk protects jkthe jk spinal jk cord

- the jk vertebrae, jk ribs, jk and jksternum jksurround jk and jk protect jk the jk lungs jk and jk heart

- the jkpelvis jkpartially jksurrounds jkand jkprotects jkthe jk reproductive jkorgans



movement jk - jkCORRECT jk ANSWER jk -muscles jk attach jkto jk bone jk via jktendons



storage jkand jkrelease jkof jkminerals jk - jkCORRECT jkANSWER jk --
bone jkmatrix jkis jkmade jkof jkcalcium jk& jkphosphorous jksalts; jk99% jkof jkthe jkbody's jkcalcium jkis jkstored jkin
jkbone jkin jkt jkhe jkform jkof jkthese jksalts



-
most jkimportant jkhormone jkis jkParathyroid jkHormone jk(PTH): jksecreted jkby jkparathyroid jkglands, jkfunction jkin jka
jkctivating jkosteoclasts jk& jkwill jkinstruct jkkidneys jkto jkretain jkcalcium jkrather jkthan jkexcreting jkit

, - other jk hormone jk that jk affect jk bone jk density:

~ leptin: jksecreted jkby jkadipose jktissue, jkinhibits jkosteoblast jkactivity

~ serotonin: jkproduced jkin jkthe jk gut, jk secreted jkinto jk blood jkafter jk eating, jk also jk inhibits jk osteoblast jk activity



store jktriglycerides jk - jk CORRECT jk ANSWER jk -- jk RBM jkgets jk replaced jk w jk adipocytes

-
these jkadipocytes jkfunction jkin jkthe jkstorage jkof jklipids, jkmainly jkin jkthe jkform jkof jktriglycerides; jkthese
jklipids jkcan jkbe jkused jkas jka jkchemical jkand jkenergy jkreserve




types jkof jk cells jk in jk bone jk tissue jk - jk CORRECT jk ANSWER jk -1. jkosteogenic jk cells

2. osteoblasts

3. osteocytes

4. osteoclasts



compact jkbone jk - jk CORRECT jk ANSWER jk -consists jkof:

-
concentric jklamellae: jkmatrix jkis jklaid jkout jkin jkcircular jkpattern; jkresembles jkthe jkpattern jkof jkan jkonion;
jkosteon jkis jkthe jkname jkof jkthe jkfunctional jkunit jkof jkall jkconcentric jklamellae



- circumferential jklamellae: jk is jkmatrix jk that jk runs jk in jk a jkpattern jk parallel jkto jkthe jk bone jk surface

- interstitial jk lamellae: jk is jk matrix jk that jkfills jk up jk the jk spaces jk btw jk the jk osteons



spongy jk bone jk - jk CORRECT jk ANSWER jk -- jk lighter jk in jk density jk than jkcompact jk bone

- has jkan jkirregular, jkhoneycomb-like jkappearance

- present jk during jk bone jk development jk & jkcan jk be jk found jk in jk the jkmarrow jk cavities jkof jk long jk bones

- form jk networks jk of jk trabeculae jk which jk allow jk for jk nutrient jk diffusion jkwithout jk the jk use jkof jk blood jk vessels



cartilage jk- jkCORRECT jkANSWER jk -- jkhyaline jkcartilage

- elastic jkcartilage

- fibrocartilage