BISC 101 Lecture Notes - Lecture 5: Humerus, Central Canal, Trabecula

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aquamarinehedgehog675

14 Oct 2012

School

Simon Fraser University

Department

Biological Sciences

Course

BISC 101

Professor

Derek Bingham

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Document Summary

Structure of bone typical long bone: diaphysis the shaft, epiphysis proximal and distal ends, metaphysis regions between diaphysis and epiphysis that contain an epiphyseal growth plate. Epiphyseal growth plate a layer of hyaline cartilage that allows diaphysis to grow in length. Lacks perichondrium and blood vessels, so repair is slow: periosteum tough connective sheath associated with blood supply. Protects bone, assists in fracture repair, nourishes bone tissue, and serves as an attachment point for ligaments and tendons. Attached to underlying bone by sharpey"s fibers thick bundles of collagen extending from periosteum into the bone matrix. Made up of: outer fibrous layer dense irregular ct. Inner osteogenic layer consists of cells that enable bone to grow in thickness and not length: medullary cavity hollow, cylindrical space within the diaphysis that contains yellow bone marrow and many blood vessels in adults. Minimizes weight of bone by reducing dense material where it isn"t needed.

Related Questions

The glucose used by the neurons for ATP production comes from:

a) Nutrients absorbed from digestion and glucose produced by the liver.

b)The breakdown of fat in adipose tissue and glycogen in muscle tissue.

c)Only Nutrients absorbed from digestion.

d)Only gluconeogenesis in the liver.

What can receptors detect?

a)Loss of homeostasis

b)Loss of homeostasis and a return to homeostasis.

c) A return to homeostasis.

d)Need for medical attention.

Which of the following is not a role of the skeletal system in maintenance of homeostasis?

a) Calcium Storage

b) Protection

c) Support

d) Phosphorous storage

What controls blood pressure in your body?

a) The hypothalamus

b) pituitary gland.

c) medulla oblongata

d) all of the above

What increases blood pressure?

a) Decreased heart rate.

b) Decreased blood vessel resistance

c) Increased blood volume

d) all of the above

What ends a hormonal response to increase blood pressure?

a) Low blood pressure

b) High blood pressure

c) A return to homeostasis.

d) Low blood pressure and a return to homeostasis.

1) a) Describe the structure of vertebrate skeletal muscle using ALL the following words: myofilament, muscle fiber, sarcoplasmicreticulum, T tubules, myofibrils, nerves, blood vessels, connective tissue. Do not simply define these terms, but describe how they are arranged to form muscle.

b) In long bones such as the femur and humerus, where is spongy bone found in relation to compact bone?

c) Describe 3 ways vertebrate skeletal muscle differs from smooth muscle in terms of its structure (functions do not count).

silverbeaver496

1. Maintenance of calcium ion homeostasis is critical to neurological, cardiac and skeletal muscle function. Consider the roles of two hormones involved in the regulation of the concentration of calcium ions in the blood. Parathyroid hormone increases the concentration of calcium ions in the blood, while calcitonin decreases the concentration. Based on this information predict the body's response to restore calcium balance if a person swallowed 100 antacid tablets made of a calcium compound in 10 minutes. Include in your answer the definition of homeostasis, the type of feedback loop involved and all of the components of a feedback loop.

amberdeer729

BISC 101 Lecture Notes - Lecture 5: Humerus, Central Canal, Trabecula

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