1.Which of the following hormones does not promote bone formation a. Parathyroid

Question

1.Which of the following hormones does not promote bone formation a. Parathyroid hormone b. Growth hormone c. Vitamin D D. Calcitonin
2. Hyaline cartilages can be found
a. In the endosteum b. In the epiphyseal plate C. Yellow marrow D. On the articulate surface over the epiphysees of a long bone E. B and D
3. Why do skeletal and cardiac muscles appear striated under a microscope
A. Capillaries regularly intersect with muscle fibers B.the Z line, thin myofilaments and thickmyofilament align within a muscle fiber C. Glycogen reserves are linearly arranged D. The sarcoplasmic reticulum stains deeply E. Myosin fibers repel stain appearing banded


1.Which of the following hormones does not promote bone formation a. Parathyroid hormone b. Growth hormone c. Vitamin D D. Calcitonin
2. Hyaline cartilages can be found
a. In the endosteum b. In the epiphyseal plate C. Yellow marrow D. On the articulate surface over the epiphysees of a long bone E. B and D
3. Why do skeletal and cardiac muscles appear striated under a microscope
A. Capillaries regularly intersect with muscle fibers B.the Z line, thin myofilaments and thickmyofilament align within a muscle fiber C. Glycogen reserves are linearly arranged D. The sarcoplasmic reticulum stains deeply E. Myosin fibers repel stain appearing banded


a. Parathyroid hormone b. Growth hormone c. Vitamin D D. Calcitonin
2. Hyaline cartilages can be found
a. In the endosteum b. In the epiphyseal plate C. Yellow marrow D. On the articulate surface over the epiphysees of a long bone E. B and D
3. Why do skeletal and cardiac muscles appear striated under a microscope
A. Capillaries regularly intersect with muscle fibers B.the Z line, thin myofilaments and thickmyofilament align within a muscle fiber C. Glycogen reserves are linearly arranged D. The sarcoplasmic reticulum stains deeply E. Myosin fibers repel stain appearing banded

Explanation / Answer

1. Parathormone.

This hormone works antagonistically to calcitonin. It draws calcium from the bones and is released in response to fall in blood calcium level. Its increased secretion causes withdrawal of more calcium from the bones which makes bone soft.

2. E. B and D.

Epiphysial plate is a hyaline cartilage plate at the two ends of long bone. Hyaline cartilage is also found on the articulating surface of joints.

3. B. The Z line, thin myofilaments and thickmyofilament align within a muscle fiber

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