Biology chapters 11-16 review

What does troponin bind to, what happens when it binds?

• Ca2+; tropomyosin shifts

• tropomyosin; the sarcomere relaxes

• acetylcholine; the sarcomere shortens
  

The rod and cone cells are located within which layer of the eye?

• Sclera

• Choroid

• Retina

The Creatine Phosphate Pathways used to obtain ATP for muscle contraction
requires oxygen.

• True

• False

What is the first step in bone growth by endochondral ossification?

• Osteoblasts cover the diaphysis with a compact bone collar.

• A cartilage model is developed and is calcified.

• Osteoblasts are transported to the cartilage by the blood vessels.

Which bone in the body does not articulate with any other bone?

• Scapula

• maxilla

• hyoid

Which step occurs first?

• reabsorption of water

• reabsorption of salt in the kidneys

• leakage of urea from the collecting duct

Steroid hormones are derived from what molecule?

• cholesterol

• peptides

• protein

Bone cells are called________ while cartilage cells are called________.

• osteocytes; osteoblasts

• lacunae; osteocytes

• osteocytes; chondrocytes

• chondrocytes; lacunae

A muscle fiber is made up of many

• myofibrils

• T tubules

• bursa

• muscle cells

When insulin is secreted, what happens?

• Tissue stores of glucose are depleted.

• Glucose is taken up by the cells.

• The blood glucose level rises.

• Adipose tissue breaks down fat.