What anchors thin and elastic filaments in place within the myofibril?

A) Z disc B) I band C) A band D) M line


Answer: A

Anatomy & Physiology

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Answer the following statements true (T) or false (F)

1. Cerebrospinal fluid is returned to the blood by being absorbed in the choroid plexus. 2. A blockage of the flow of cerebrospinal fluid can result in a condition called hydrocephalus. 3. A plexus allows the fibers from several spinal nerves to reorganize into a single peripheral nerve. 4. A skin surface area supplied by a single spinal nerve is called a plexus. 5. The autonomic nervous system is more likely to stimulate a smooth muscle than a voluntary muscle.

Anatomy & Physiology

Many vertebrates' response to hypoxia is contraction of which organ?

A) Liver B) Pancreas C) Spleen D) Lung

Anatomy & Physiology

Squamous cell carcinoma originates in the

A. deepest layer of the dermis. B. deepest layer of the epidermis. C. superficial dermis. D. superficial epidermis.

Anatomy & Physiology

During coagulation, which of the following is found in the extrinsic mechanism only?

A) Prothrombin activator B) Thromboplastin C) Prothrombin D) Calcium E) Thrombin

Anatomy & Physiology