{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

11.28.05 - The Vertebrate Brain a/c Announcements Web Quiz...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
November 28, 2005 The Vertebrate Brain a/c Announcements: Web Quiz 10 ends today Bring pencil on Wednesday Volunteers needed for Dining Discussion in Spring A review of Muscles: Muscle muscle fiber myofibrils Sarcomere Sliding filaments: o Actin makes up thin filaments o Myosin makes up thick filamens o Myosin-Actn Interactions: Myosin head moves forward and backward depending on ATP. (cocked is with ATP, open is no ATP) When ATP ADP+P, a cross bridge is created to attach to actin filaments. Ca+ ions bind to troponin in sarcomere, causing tropomyosin to rotate and expose many bindindg sites in actin. o Sarcoplassmic reticulum (ER filled with Ca+) surrounds each microfibril o Transverse Tubule wraps around microfibril on the “Z line” o Evidence for Ca++ Release Microstimulation b/w two tubules when positioned over the light (z line) region shows release of calcium onto sarcomere.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}