On average, how many lysosomes do cells contain?

a. about 10
b. about 50
c. about 100
d. about 300
e. about 1,000


d

Anatomy & Physiology

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Tendons and ligaments attach to the ________ of bone

A) osteocytes B) lacunae C) periosteum D) calcium phosphate E) central canals

Anatomy & Physiology

The muscle that expels semen during ejaculation is the __________.

Fill in the blank(s) with the appropriate word(s).

Anatomy & Physiology

During implantation, the trophoblast divides into a deep layer called the ________, which is composed of individual cells

A) amnion B) embryoblast C) syncytiotrophoblast D) chorion E) cytotrophoblast

Anatomy & Physiology

Alveoli are kept clean by the action of

A) antibodies. B) macrophages. C) surfactant. D) platelets.

Anatomy & Physiology